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+<!DOCTYPE html>
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+<html class="writer-html5" lang="en" >
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+<head>
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+ <meta charset="utf-8" /><meta name="generator" content="Docutils 0.18.1: http://docutils.sourceforge.net/" />
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+
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+ <meta name="viewport" content="width=device-width, initial-scale=1.0" />
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+ <title>Performance considerations — PHP-QRCode main
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+ Manual</title>
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+ <link rel="stylesheet" href="../_static/pygments.css" type="text/css" />
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+ <link rel="stylesheet" href="../_static/css/theme.css" type="text/css" />
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+ <!--[if lt IE 9]>
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+ <script src="../_static/js/html5shiv.min.js"></script>
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+ <![endif]-->
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+
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+ <script src="../_static/jquery.js?v=5d32c60e"></script>
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+ <script src="../_static/_sphinx_javascript_frameworks_compat.js?v=2cd50e6c"></script>
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+ <script src="../_static/documentation_options.js?v=a8da1a53"></script>
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+ <script src="../_static/doctools.js?v=888ff710"></script>
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+ <script src="../_static/sphinx_highlight.js?v=dc90522c"></script>
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+ <script src="../_static/js/theme.js"></script>
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+ <link rel="index" title="Index" href="../genindex.html" />
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+ <link rel="search" title="Search" href="../search.html" />
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+ <link rel="next" title="How to contribute" href="Contribute.html" />
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+ <link rel="prev" title="Popular content and URI schemes" href="URI-Content.html" />
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+</head>
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+
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+<body class="wy-body-for-nav">
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+ <div class="wy-grid-for-nav">
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+ <nav data-toggle="wy-nav-shift" class="wy-nav-side">
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+ <div class="wy-side-scroll">
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+ <div class="wy-side-nav-search" >
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+
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+
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+
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+ <a href="../index.html" class="icon icon-home">
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+ PHP-QRCode
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+ </a>
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+<div role="search">
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+ <form id="rtd-search-form" class="wy-form" action="../search.html" method="get">
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+ <input type="text" name="q" placeholder="Search docs" aria-label="Search docs" />
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+ <input type="hidden" name="check_keywords" value="yes" />
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+ <input type="hidden" name="area" value="default" />
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+ </form>
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+</div>
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+ </div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
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+ <p class="caption" role="heading"><span class="caption-text">Usage</span></p>
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+<ul>
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+<li class="toctree-l1"><a class="reference internal" href="../Usage/Overview.html">Overview</a><ul>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Overview.html#features">Features</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Overview.html#requirements">Requirements</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Overview.html#framework-integration">Framework Integration</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Overview.html#shameless-advertising">Shameless advertising</a></li>
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+</ul>
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+</li>
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+<li class="toctree-l1"><a class="reference internal" href="../Usage/Installation.html">Installation</a><ul>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Installation.html#installation-with-composer">Installation with Composer</a><ul>
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+<li class="toctree-l3"><a class="reference internal" href="../Usage/Installation.html#composer-json">composer.json</a><ul>
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+<li class="toctree-l4"><a class="reference internal" href="../Usage/Installation.html#version-switch">Version switch</a></li>
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+</ul>
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+</li>
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+<li class="toctree-l3"><a class="reference internal" href="../Usage/Installation.html#terminal">Terminal</a></li>
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+</ul>
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+</li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Installation.html#manual-installation">Manual installation</a><ul>
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+<li class="toctree-l3"><a class="reference internal" href="../Usage/Installation.html#can-i-use-this-library-without-using-composer">Can i use this library without using composer?</a></li>
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+</ul>
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+</li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Installation.html#supported-php-versions-extension-requirements">Supported PHP versions & extension requirements</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Installation.html#imagemagick">ImageMagick</a></li>
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+</ul>
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+</li>
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+<li class="toctree-l1"><a class="reference internal" href="../Usage/Quickstart.html">Quickstart</a><ul>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Quickstart.html#import-the-library">Import the library</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Quickstart.html#create-your-first-qr-code">Create your first QR Code</a><ul>
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+<li class="toctree-l3"><a class="reference internal" href="../Usage/Quickstart.html#configuration">Configuration</a></li>
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+</ul>
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+</li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Quickstart.html#reading-qr-codes">Reading QR Codes</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Quickstart.html#notes">Notes</a></li>
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+</ul>
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+</li>
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+<li class="toctree-l1"><a class="reference internal" href="../Usage/Advanced-usage.html">Advanced usage</a><ul>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Advanced-usage.html#configuration-via-qroptions">Configuration via <code class="docutils literal notranslate"><span class="pre">QROptions</span></code></a><ul>
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+<li class="toctree-l3"><a class="reference internal" href="../Usage/Advanced-usage.html#supply-an-iterable-of-options">Supply an <code class="docutils literal notranslate"><span class="pre">iterable</span></code> of options</a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Usage/Advanced-usage.html#load-and-save-options-from-to-json">Load and save options from/to JSON</a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Usage/Advanced-usage.html#extending-the-qroptions-class">Extending the <code class="docutils literal notranslate"><span class="pre">QROptions</span></code> class</a></li>
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+</ul>
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+</li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Advanced-usage.html#qrcode-methods"><code class="docutils literal notranslate"><span class="pre">QRCode</span></code> methods</a><ul>
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+<li class="toctree-l3"><a class="reference internal" href="../Usage/Advanced-usage.html#render-a-qrmatrix-instance">Render a <code class="docutils literal notranslate"><span class="pre">QRMatrix</span></code> instance</a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Usage/Advanced-usage.html#mixed-mode">Mixed mode</a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Usage/Advanced-usage.html#qr-code-reader">QR Code reader</a></li>
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+</ul>
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+</li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Advanced-usage.html#common-output-options">Common output options</a><ul>
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+<li class="toctree-l3"><a class="reference internal" href="../Usage/Advanced-usage.html#save-to-file">Save to file</a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Usage/Advanced-usage.html#base64-uri-output">Base64 URI output</a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Usage/Advanced-usage.html#return-the-image-resource">Return the image resource</a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Usage/Advanced-usage.html#add-a-logo-space">Add a logo space</a></li>
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+</ul>
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+</li>
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+</ul>
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+</li>
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+<li class="toctree-l1"><a class="reference internal" href="../Usage/Configuration-settings.html">Configuration settings</a><ul>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#version">version</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#versionmin">versionMin</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#versionmax">versionMax</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#ecclevel">eccLevel</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#maskpattern">maskPattern</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#addquietzone">addQuietzone</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#quietzonesize">quietzoneSize</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#outputtype">outputType</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#outputinterface">outputInterface</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#returnresource">returnResource</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#cachefile">cachefile</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#outputbase64">outputBase64</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#eol">eol</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#bgcolor">bgColor</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#invertmatrix">invertMatrix</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#drawlightmodules">drawLightModules</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#drawcircularmodules">drawCircularModules</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#circleradius">circleRadius</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#keepassquare">keepAsSquare</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#connectpaths">connectPaths</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#excludefromconnect">excludeFromConnect</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#modulevalues">moduleValues</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#addlogospace">addLogoSpace</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#logospacewidth">logoSpaceWidth</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#logospaceheight">logoSpaceHeight</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#logospacestartx">logoSpaceStartX</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#logospacestarty">logoSpaceStartY</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#scale">scale</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#imagetransparent">imageTransparent</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#transparencycolor">transparencyColor</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#quality">quality</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#gdimageuseupscale">gdImageUseUpscale</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#imagickformat">imagickFormat</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#cssclass">cssClass</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#svgaddxmlheader">svgAddXmlHeader</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#svgdefs">svgDefs</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#svgpreserveaspectratio">svgPreserveAspectRatio</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#svgusefillattributes">svgUseFillAttributes</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#textlinestart">textLineStart</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#jsonflags">jsonFlags</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#jsonasbooleans">jsonAsBooleans</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#fpdfmeasureunit">fpdfMeasureUnit</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#readeruseimagickifavailable">readerUseImagickIfAvailable</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#readergrayscale">readerGrayscale</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#readerinvertcolors">readerInvertColors</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#readerincreasecontrast">readerIncreaseContrast</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#imagebase64">imageBase64</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#jpegquality">jpegQuality</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#pngcompression">pngCompression</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#imagetransparencybg">imageTransparencyBG</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Usage/Configuration-settings.html#imagickbg">imagickBG</a></li>
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+</ul>
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+</li>
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+</ul>
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+<p class="caption" role="heading"><span class="caption-text">Customizing output</span></p>
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+<ul>
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+<li class="toctree-l1"><a class="reference internal" href="../Customizing/Module-Values.html">Module values</a><ul>
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+<li class="toctree-l2"><a class="reference internal" href="../Customizing/Module-Values.html#basics">Basics</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Customizing/Module-Values.html#assigning-values">Assigning values</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Customizing/Module-Values.html#handling-in-your-own-qroutputinterface">Handling in your own <code class="docutils literal notranslate"><span class="pre">QROutputInterface</span></code></a><ul>
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+<li class="toctree-l3"><a class="reference internal" href="../Customizing/Module-Values.html#setting-module-values">Setting module values</a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Customizing/Module-Values.html#using-the-module-values">Using the module values</a></li>
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+</ul>
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+</li>
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+</ul>
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+</li>
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+<li class="toctree-l1"><a class="reference internal" href="../Customizing/QROutputAbstract.html"><code class="docutils literal notranslate"><span class="pre">QROutputAbstract</span></code></a><ul>
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+<li class="toctree-l2"><a class="reference internal" href="../Customizing/QROutputAbstract.html#properties">Properties</a><ul>
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+<li class="toctree-l3"><a class="reference internal" href="../Customizing/QROutputAbstract.html#options-and-matrix"><code class="docutils literal notranslate"><span class="pre">$options</span></code> and <code class="docutils literal notranslate"><span class="pre">$matrix</span></code></a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Customizing/QROutputAbstract.html#modulecount-scale-and-length"><code class="docutils literal notranslate"><span class="pre">$moduleCount</span></code>, <code class="docutils literal notranslate"><span class="pre">$scale</span></code> and <code class="docutils literal notranslate"><span class="pre">$length</span></code></a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Customizing/QROutputAbstract.html#modulevalues"><code class="docutils literal notranslate"><span class="pre">$moduleValues</span></code></a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Customizing/QROutputAbstract.html#copies-of-qroptions-values">Copies of <code class="docutils literal notranslate"><span class="pre">QROptions</span></code> values</a></li>
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+</ul>
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+</li>
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+<li class="toctree-l2"><a class="reference internal" href="../Customizing/QROutputAbstract.html#methods">Methods</a><ul>
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+<li class="toctree-l3"><a class="reference internal" href="../Customizing/QROutputAbstract.html#setmodulevalues"><code class="docutils literal notranslate"><span class="pre">setModuleValues()</span></code></a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Customizing/QROutputAbstract.html#modulevalueisvalid"><code class="docutils literal notranslate"><span class="pre">moduleValueIsValid()</span></code></a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Customizing/QROutputAbstract.html#preparemodulevalue"><code class="docutils literal notranslate"><span class="pre">prepareModuleValue()</span></code></a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Customizing/QROutputAbstract.html#getdefaultmodulevalue"><code class="docutils literal notranslate"><span class="pre">getDefaultModuleValue()</span></code></a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Customizing/QROutputAbstract.html#getmodulevalue-and-getmodulevalueat"><code class="docutils literal notranslate"><span class="pre">getModuleValue()</span></code> and <code class="docutils literal notranslate"><span class="pre">getModuleValueAt()</span></code></a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Customizing/QROutputAbstract.html#setmatrixdimensions"><code class="docutils literal notranslate"><span class="pre">setMatrixDimensions()</span></code></a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Customizing/QROutputAbstract.html#getoutputdimensions"><code class="docutils literal notranslate"><span class="pre">getOutputDimensions()</span></code></a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Customizing/QROutputAbstract.html#collectmodules"><code class="docutils literal notranslate"><span class="pre">collectModules()</span></code></a></li>
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+<li class="toctree-l3"><a class="reference internal" href="../Customizing/QROutputAbstract.html#savetofile-and-tobase64datauri"><code class="docutils literal notranslate"><span class="pre">saveToFile()</span></code> and <code class="docutils literal notranslate"><span class="pre">toBase64DataURI()</span></code></a></li>
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+</ul>
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+</li>
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+</ul>
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+</li>
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+</ul>
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+<p class="caption" role="heading"><span class="caption-text">Built-In Output Modules</span></p>
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+<ul>
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+<li class="toctree-l1"><a class="reference internal" href="../Built-In-Output/QREps.html">QREps</a><ul>
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+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QREps.html#example">Example</a></li>
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+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QREps.html#additional-methods">Additional methods</a></li>
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|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QREps.html#options-that-affect-this-module">Options that affect this module</a><ul>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="../Built-In-Output/QREps.html#options-that-have-no-effect">Options that have no effect</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l1"><a class="reference internal" href="../Built-In-Output/QRFpdf.html">QRFpdf</a><ul>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRFpdf.html#example">Example</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRFpdf.html#additional-methods">Additional methods</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRFpdf.html#options-that-affect-this-module">Options that affect this module</a><ul>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="../Built-In-Output/QRFpdf.html#options-that-have-no-effect">Options that have no effect</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l1"><a class="reference internal" href="../Built-In-Output/QRGdImage.html">QRGdImage</a><ul>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRGdImage.html#example">Example</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRGdImage.html#additional-methods">Additional methods</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRGdImage.html#options-that-affect-this-module">Options that affect this module</a><ul>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="../Built-In-Output/QRGdImage.html#options-that-have-no-effect">Options that have no effect</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l1"><a class="reference internal" href="../Built-In-Output/QRImagick.html">QRImagick</a><ul>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRImagick.html#example">Example</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRImagick.html#additional-methods">Additional methods</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRImagick.html#options-that-affect-this-module">Options that affect this module</a><ul>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="../Built-In-Output/QRImagick.html#options-that-have-no-effect">Options that have no effect</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l1"><a class="reference internal" href="../Built-In-Output/QRMarkupHTML.html">QRMarkupHTML</a><ul>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRMarkupHTML.html#example">Example</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRMarkupHTML.html#additional-methods">Additional methods</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRMarkupHTML.html#options-that-affect-this-module">Options that affect this module</a><ul>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="../Built-In-Output/QRMarkupHTML.html#options-that-have-no-effect">Options that have no effect</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l1"><a class="reference internal" href="../Built-In-Output/QRMarkupSVG.html">QRMarkupSVG</a><ul>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRMarkupSVG.html#example">Example</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRMarkupSVG.html#additional-methods">Additional methods</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRMarkupSVG.html#options-that-affect-this-module">Options that affect this module</a><ul>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="../Built-In-Output/QRMarkupSVG.html#options-that-have-no-effect">Options that have no effect</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l1"><a class="reference internal" href="../Built-In-Output/QRString.html">QRString</a><ul>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRString.html#plain-text">Plain text</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRString.html#json">JSON</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRString.html#additional-methods">Additional methods</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="../Built-In-Output/QRString.html#options-that-affect-this-module">Options that affect this module</a><ul>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="../Built-In-Output/QRString.html#options-that-have-no-effect">Options that have no effect</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+</ul>
|
|
|
+<p class="caption" role="heading"><span class="caption-text">Appendix</span></p>
|
|
|
+<ul class="current">
|
|
|
+<li class="toctree-l1"><a class="reference internal" href="Terminology.html">Terminology</a><ul>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="Terminology.html#qr-code">QR Code</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="Terminology.html#matrix">Matrix</a><ul>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#module">Module</a></li>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#version">Version</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="Terminology.html#function-patterns">Function Patterns</a><ul>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#finder-pattern">Finder Pattern</a></li>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#alignment-pattern">Alignment Pattern</a></li>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#timing-pattern">Timing Pattern</a></li>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#separators">Separators</a></li>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#quiet-zone">Quiet Zone</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="Terminology.html#encoding-region">Encoding Region</a><ul>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#data">Data</a></li>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#version-information">Version Information</a></li>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#format-information">Format Information</a></li>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#darkmodule">Darkmodule</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="Terminology.html#mode">Mode</a><ul>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#segment">Segment</a></li>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#extended-channel-interpretation-eci">Extended Channel Interpretation (ECI)</a></li>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#mixed-mode">Mixed Mode</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="Terminology.html#ecc-error-correction-coding">ECC (Error Correction Coding)</a><ul>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#ecc-level">ECC Level</a></li>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#maximum-data-capacity">Maximum data capacity</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="Terminology.html#data-masking">Data masking</a><ul>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#evaluation">Evaluation</a></li>
|
|
|
+<li class="toctree-l3"><a class="reference internal" href="Terminology.html#mask-pattern">Mask pattern</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="Terminology.html#reflectance">Reflectance</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l1"><a class="reference internal" href="URI-Content.html">Popular content and URI schemes</a><ul>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="URI-Content.html#url-https">URL <code class="docutils literal notranslate"><span class="pre">https</span></code></a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="URI-Content.html#e-mail-mailto">E-Mail <code class="docutils literal notranslate"><span class="pre">mailto</span></code></a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="URI-Content.html#phone-numbers-tel">Phone numbers <code class="docutils literal notranslate"><span class="pre">tel</span></code></a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="URI-Content.html#geo-coordinates-geo">Geo Coordinates <code class="docutils literal notranslate"><span class="pre">geo</span></code></a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="URI-Content.html#mobile-authenticators-otpauth">Mobile Authenticators <code class="docutils literal notranslate"><span class="pre">otpauth</span></code></a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="URI-Content.html#wireless-network-configuration">Wireless Network configuration</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="URI-Content.html#contact-information-vcard">Contact information: vCard</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="URI-Content.html#calendar-events-vcalendar-and-icalendar">Calendar Events: vCalendar and iCalendar</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="URI-Content.html#see-also">See also</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l1 current"><a class="current reference internal" href="#">Performance considerations</a><ul>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="#version">Version</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="#ecc-level">Ecc level</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="#data-mode">Data mode</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="#mask-pattern">Mask pattern</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="#output">Output</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l1"><a class="reference internal" href="Contribute.html">How to contribute</a><ul>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="Contribute.html#questions-and-issues">Questions and issues</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="Contribute.html#bug-reports">Bug reports</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="Contribute.html#pull-requests-and-bug-fixes">Pull requests and bug fixes</a></li>
|
|
|
+<li class="toctree-l2"><a class="reference internal" href="Contribute.html#documentation">Documentation</a></li>
|
|
|
+</ul>
|
|
|
+</li>
|
|
|
+<li class="toctree-l1"><a class="reference internal" href="License.html">License</a></li>
|
|
|
+</ul>
|
|
|
+
|
|
|
+ </div>
|
|
|
+ </div>
|
|
|
+ </nav>
|
|
|
+
|
|
|
+ <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"><nav class="wy-nav-top" aria-label="Mobile navigation menu" >
|
|
|
+ <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
|
|
|
+ <a href="../index.html">PHP-QRCode</a>
|
|
|
+ </nav>
|
|
|
+
|
|
|
+ <div class="wy-nav-content">
|
|
|
+ <div class="rst-content">
|
|
|
+ <div role="navigation" aria-label="Page navigation">
|
|
|
+ <ul class="wy-breadcrumbs">
|
|
|
+ <li><a href="../index.html" class="icon icon-home" aria-label="Home"></a></li>
|
|
|
+ <li class="breadcrumb-item active">Performance considerations</li>
|
|
|
+ <li class="wy-breadcrumbs-aside">
|
|
|
+ <a href="https://github.com/chillerlan/php-qrcode/blob/main/docs/Appendix/Performance-considerations.md" class="fa fa-github"> Edit on GitHub</a>
|
|
|
+ </li>
|
|
|
+ </ul>
|
|
|
+ <hr/>
|
|
|
+</div>
|
|
|
+ <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
|
|
|
+ <div itemprop="articleBody">
|
|
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+
|
|
|
+ <section id="performance-considerations">
|
|
|
+<h1>Performance considerations<a class="headerlink" href="#performance-considerations" title="Link to this heading"></a></h1>
|
|
|
+<p>Generating a QR Code is not a trivial task - it is a combination of countless complex mathematical operations.</p>
|
|
|
+<p>This library seeks not to be the fastest QR Code generator, but instead to provide flexibility and user friendlyness,
|
|
|
+which in turn comes with a slight performance cost.</p>
|
|
|
+<section id="version">
|
|
|
+<h2>Version<a class="headerlink" href="#version" title="Link to this heading"></a></h2>
|
|
|
+<p>The <a class="reference internal" href="Terminology.html#version"><span class="std std-ref">version of the QR symbol</span></a> is one of the major performance factors as it
|
|
|
+determines the size of the symbol and therefore the amount of data that can be stored. Iterating over the internal
|
|
|
+representation of the matrix takes more time with increasing size and the internals iterate over the matrix a LOT.</p>
|
|
|
+<p>Because of that you want of course to select the smallest possible version for the given data, which the encoder does by default.
|
|
|
+However, sometimes the possibly varying size of the symbol may not be desired and you want to choose a fixed size, in which case
|
|
|
+you should determine the maximum size of the input data and choose a version that fits.</p>
|
|
|
+</section>
|
|
|
+<section id="ecc-level">
|
|
|
+<h2>Ecc level<a class="headerlink" href="#ecc-level" title="Link to this heading"></a></h2>
|
|
|
+<p>Another factor is the <a class="reference internal" href="Terminology.html#ecc-error-correction-coding"><span class="std std-ref">ECC level</span></a> that determines the error correction capacity. The default setting is the lowest capacity (L, 7%)
|
|
|
+which allows the highest amount of data to be stored and which is good enough for e.g. on-screen display or poster prints.
|
|
|
+ECC level H on the other hand allows for up to 30% error correction capacity, which is great for “high risk” applications such as prints on mail.
|
|
|
+With increasing error correction capacity, the maximum amount of data a symbol can hold decreases, and a higher version number may be necessary.</p>
|
|
|
+</section>
|
|
|
+<section id="data-mode">
|
|
|
+<h2>Data mode<a class="headerlink" href="#data-mode" title="Link to this heading"></a></h2>
|
|
|
+<p>By default, the encoder auto-detects the best <a class="reference internal" href="Terminology.html#mode"><span class="std std-ref">mode for data encoding</span></a> (numeric, alphanumeric, kanji, hanzi or 8-bit binary)
|
|
|
+and depending on the length of the given data, the detection costs an increasing amount of time. To circumvent this,
|
|
|
+you can call one of the “add segment” methods on the <code class="docutils literal notranslate"><span class="pre">QRCode</span></code> instance, for example: <code class="docutils literal notranslate"><span class="pre">$qrcode->addByteSegment($data)</span></code>.</p>
|
|
|
+<p>Generally, using 8-bit binary mode (or just “byte mode”) is the fast and fail-safe mode for any kind of data, and with
|
|
|
+<a class="reference external" href="https://en.wikipedia.org/wiki/Extended_Channel_Interpretation">ECI</a> it even offers support for character sets other than UTF-8.
|
|
|
+So, unless you want to fit a large amount of japanese or chinese characters into a QR symbol of a certain version,
|
|
|
+encoding those characters as 3 or 4 byte UTF-8 may still be faster in 8-bit byte than in the “compressed” 13-bit double byte modes.</p>
|
|
|
+</section>
|
|
|
+<section id="mask-pattern">
|
|
|
+<h2>Mask pattern<a class="headerlink" href="#mask-pattern" title="Link to this heading"></a></h2>
|
|
|
+<p><a class="reference internal" href="Terminology.html#data-masking"><span class="std std-ref">Evaluating the QR symbol</span></a> in order to pick the right <a class="reference internal" href="Terminology.html#mask-pattern"><span class="std std-ref">mask pattern</span></a>
|
|
|
+is a complex and costly operation that is necessary to ensure the symbol is readable. Although <a class="reference internal" href="../Usage/Configuration-settings.html#maskpattern"><span class="std std-ref">there is an option</span></a>
|
|
|
+to override the evaluation and manually set a mask pattern, this is not recommended unless you know exactly what you’re doing
|
|
|
+as it can render a QR symbol unreadable.</p>
|
|
|
+<p>The table below shows the performance impact (in miliseconds) of the mask pattern evaluation for each version, the times may vary between systems.</p>
|
|
|
+<table class="docutils align-default">
|
|
|
+<thead>
|
|
|
+<tr class="row-odd"><th class="head"><p>version</p></th>
|
|
|
+<th class="head text-right"><p>1</p></th>
|
|
|
+<th class="head text-right"><p>2</p></th>
|
|
|
+<th class="head text-right"><p>3</p></th>
|
|
|
+<th class="head text-right"><p>4</p></th>
|
|
|
+<th class="head text-right"><p>5</p></th>
|
|
|
+<th class="head text-right"><p>6</p></th>
|
|
|
+<th class="head text-right"><p>7</p></th>
|
|
|
+<th class="head text-right"><p>8</p></th>
|
|
|
+<th class="head text-right"><p>9</p></th>
|
|
|
+<th class="head text-right"><p>10</p></th>
|
|
|
+</tr>
|
|
|
+</thead>
|
|
|
+<tbody>
|
|
|
+<tr class="row-even"><td><p><strong>1-10</strong></p></td>
|
|
|
+<td class="text-right"><p>4.414</p></td>
|
|
|
+<td class="text-right"><p>5.697</p></td>
|
|
|
+<td class="text-right"><p>7.986</p></td>
|
|
|
+<td class="text-right"><p>9.221</p></td>
|
|
|
+<td class="text-right"><p>10.877</p></td>
|
|
|
+<td class="text-right"><p>11.293</p></td>
|
|
|
+<td class="text-right"><p>13.901</p></td>
|
|
|
+<td class="text-right"><p>15.563</p></td>
|
|
|
+<td class="text-right"><p>18.142</p></td>
|
|
|
+<td class="text-right"><p>20.501</p></td>
|
|
|
+</tr>
|
|
|
+<tr class="row-odd"><td><p><strong>11-20</strong></p></td>
|
|
|
+<td class="text-right"><p>22.662</p></td>
|
|
|
+<td class="text-right"><p>27.779</p></td>
|
|
|
+<td class="text-right"><p>29.622</p></td>
|
|
|
+<td class="text-right"><p>33.017</p></td>
|
|
|
+<td class="text-right"><p>36.358</p></td>
|
|
|
+<td class="text-right"><p>39.712</p></td>
|
|
|
+<td class="text-right"><p>43.685</p></td>
|
|
|
+<td class="text-right"><p>47.121</p></td>
|
|
|
+<td class="text-right"><p>51.389</p></td>
|
|
|
+<td class="text-right"><p>57.865</p></td>
|
|
|
+</tr>
|
|
|
+<tr class="row-even"><td><p><strong>21-30</strong></p></td>
|
|
|
+<td class="text-right"><p>59.753</p></td>
|
|
|
+<td class="text-right"><p>68.502</p></td>
|
|
|
+<td class="text-right"><p>68.523</p></td>
|
|
|
+<td class="text-right"><p>72.866</p></td>
|
|
|
+<td class="text-right"><p>78.245</p></td>
|
|
|
+<td class="text-right"><p>83.593</p></td>
|
|
|
+<td class="text-right"><p>88.327</p></td>
|
|
|
+<td class="text-right"><p>94.921</p></td>
|
|
|
+<td class="text-right"><p>103.394</p></td>
|
|
|
+<td class="text-right"><p>106.358</p></td>
|
|
|
+</tr>
|
|
|
+<tr class="row-odd"><td><p><strong>31-40</strong></p></td>
|
|
|
+<td class="text-right"><p>113.311</p></td>
|
|
|
+<td class="text-right"><p>120.484</p></td>
|
|
|
+<td class="text-right"><p>126.215</p></td>
|
|
|
+<td class="text-right"><p>132.931</p></td>
|
|
|
+<td class="text-right"><p>139.783</p></td>
|
|
|
+<td class="text-right"><p>145.617</p></td>
|
|
|
+<td class="text-right"><p>170.576</p></td>
|
|
|
+<td class="text-right"><p>165.996</p></td>
|
|
|
+<td class="text-right"><p>167.365</p></td>
|
|
|
+<td class="text-right"><p>175.821</p></td>
|
|
|
+</tr>
|
|
|
+</tbody>
|
|
|
+</table>
|
|
|
+</section>
|
|
|
+<section id="output">
|
|
|
+<h2>Output<a class="headerlink" href="#output" title="Link to this heading"></a></h2>
|
|
|
+<p>Output rendering depends heavily on the size of the QR matrix, the desired type and the underlying libraries and/or PHP extensions.
|
|
|
+Especially the rendering of raster images through GD or ImagMagick can be very slow, depending on <a class="reference internal" href="../Usage/Configuration-settings.html#scale"><span class="std std-ref">the scale setting</span></a>,
|
|
|
+filters and image type.</p>
|
|
|
+<p>Below a comparison of the performance for the several built-in output classes (times in miliseconds, scale = 5):</p>
|
|
|
+<table class="docutils align-default">
|
|
|
+<thead>
|
|
|
+<tr class="row-odd"><th class="head"><p></p></th>
|
|
|
+<th class="head text-right"><p>v5</p></th>
|
|
|
+<th class="head text-right"><p>v10</p></th>
|
|
|
+<th class="head text-right"><p>v15</p></th>
|
|
|
+<th class="head text-right"><p>v20</p></th>
|
|
|
+<th class="head text-right"><p>v25</p></th>
|
|
|
+<th class="head text-right"><p>v30</p></th>
|
|
|
+<th class="head text-right"><p>v35</p></th>
|
|
|
+<th class="head text-right"><p>v40</p></th>
|
|
|
+</tr>
|
|
|
+</thead>
|
|
|
+<tbody>
|
|
|
+<tr class="row-even"><td><p><strong>QRMarkupSVG</strong></p></td>
|
|
|
+<td class="text-right"><p>3.732</p></td>
|
|
|
+<td class="text-right"><p>8.645</p></td>
|
|
|
+<td class="text-right"><p>13.846</p></td>
|
|
|
+<td class="text-right"><p>21.127</p></td>
|
|
|
+<td class="text-right"><p>32.842</p></td>
|
|
|
+<td class="text-right"><p>43.753</p></td>
|
|
|
+<td class="text-right"><p>56.584</p></td>
|
|
|
+<td class="text-right"><p>73.885</p></td>
|
|
|
+</tr>
|
|
|
+<tr class="row-odd"><td><p><strong>QRMarkupHTML</strong></p></td>
|
|
|
+<td class="text-right"><p>0.522</p></td>
|
|
|
+<td class="text-right"><p>1.308</p></td>
|
|
|
+<td class="text-right"><p>2.062</p></td>
|
|
|
+<td class="text-right"><p>2.761</p></td>
|
|
|
+<td class="text-right"><p>3.907</p></td>
|
|
|
+<td class="text-right"><p>5.201</p></td>
|
|
|
+<td class="text-right"><p>7.931</p></td>
|
|
|
+<td class="text-right"><p>9.572</p></td>
|
|
|
+</tr>
|
|
|
+<tr class="row-even"><td><p><strong>QRGdImageBMP</strong></p></td>
|
|
|
+<td class="text-right"><p>5.998</p></td>
|
|
|
+<td class="text-right"><p>12.541</p></td>
|
|
|
+<td class="text-right"><p>20.728</p></td>
|
|
|
+<td class="text-right"><p>32.336</p></td>
|
|
|
+<td class="text-right"><p>46.345</p></td>
|
|
|
+<td class="text-right"><p>62.842</p></td>
|
|
|
+<td class="text-right"><p>81.555</p></td>
|
|
|
+<td class="text-right"><p>106.482</p></td>
|
|
|
+</tr>
|
|
|
+<tr class="row-odd"><td><p><strong>QRGdImageGIF</strong></p></td>
|
|
|
+<td class="text-right"><p>3.427</p></td>
|
|
|
+<td class="text-right"><p>6.817</p></td>
|
|
|
+<td class="text-right"><p>12.226</p></td>
|
|
|
+<td class="text-right"><p>17.925</p></td>
|
|
|
+<td class="text-right"><p>25.453</p></td>
|
|
|
+<td class="text-right"><p>35.136</p></td>
|
|
|
+<td class="text-right"><p>44.706</p></td>
|
|
|
+<td class="text-right"><p>57.477</p></td>
|
|
|
+</tr>
|
|
|
+<tr class="row-even"><td><p><strong>QRGdImageJPEG</strong></p></td>
|
|
|
+<td class="text-right"><p>2.284</p></td>
|
|
|
+<td class="text-right"><p>4.882</p></td>
|
|
|
+<td class="text-right"><p>8.161</p></td>
|
|
|
+<td class="text-right"><p>12.097</p></td>
|
|
|
+<td class="text-right"><p>17.333</p></td>
|
|
|
+<td class="text-right"><p>23.862</p></td>
|
|
|
+<td class="text-right"><p>30.327</p></td>
|
|
|
+<td class="text-right"><p>40.226</p></td>
|
|
|
+</tr>
|
|
|
+<tr class="row-odd"><td><p><strong>QRGdImagePNG</strong></p></td>
|
|
|
+<td class="text-right"><p>4.523</p></td>
|
|
|
+<td class="text-right"><p>9.377</p></td>
|
|
|
+<td class="text-right"><p>16.581</p></td>
|
|
|
+<td class="text-right"><p>26.207</p></td>
|
|
|
+<td class="text-right"><p>36.516</p></td>
|
|
|
+<td class="text-right"><p>49.066</p></td>
|
|
|
+<td class="text-right"><p>63.765</p></td>
|
|
|
+<td class="text-right"><p>82.074</p></td>
|
|
|
+</tr>
|
|
|
+<tr class="row-even"><td><p><strong>QRGdImageWEBP</strong></p></td>
|
|
|
+<td class="text-right"><p>8.211</p></td>
|
|
|
+<td class="text-right"><p>17.367</p></td>
|
|
|
+<td class="text-right"><p>30.079</p></td>
|
|
|
+<td class="text-right"><p>47.095</p></td>
|
|
|
+<td class="text-right"><p>69.668</p></td>
|
|
|
+<td class="text-right"><p>91.378</p></td>
|
|
|
+<td class="text-right"><p>119.869</p></td>
|
|
|
+<td class="text-right"><p>150.288</p></td>
|
|
|
+</tr>
|
|
|
+<tr class="row-odd"><td><p><strong>QRStringJSON</strong></p></td>
|
|
|
+<td class="text-right"><p>0.043</p></td>
|
|
|
+<td class="text-right"><p>0.066</p></td>
|
|
|
+<td class="text-right"><p>0.107</p></td>
|
|
|
+<td class="text-right"><p>0.158</p></td>
|
|
|
+<td class="text-right"><p>0.215</p></td>
|
|
|
+<td class="text-right"><p>0.301</p></td>
|
|
|
+<td class="text-right"><p>0.369</p></td>
|
|
|
+<td class="text-right"><p>0.492</p></td>
|
|
|
+</tr>
|
|
|
+<tr class="row-even"><td><p><strong>QRStringText</strong></p></td>
|
|
|
+<td class="text-right"><p>0.229</p></td>
|
|
|
+<td class="text-right"><p>0.387</p></td>
|
|
|
+<td class="text-right"><p>0.628</p></td>
|
|
|
+<td class="text-right"><p>0.952</p></td>
|
|
|
+<td class="text-right"><p>1.312</p></td>
|
|
|
+<td class="text-right"><p>1.759</p></td>
|
|
|
+<td class="text-right"><p>2.329</p></td>
|
|
|
+<td class="text-right"><p>3.045</p></td>
|
|
|
+</tr>
|
|
|
+<tr class="row-odd"><td><p><strong>QRImagick</strong></p></td>
|
|
|
+<td class="text-right"><p>37.694</p></td>
|
|
|
+<td class="text-right"><p>68.808</p></td>
|
|
|
+<td class="text-right"><p>114.415</p></td>
|
|
|
+<td class="text-right"><p>172.962</p></td>
|
|
|
+<td class="text-right"><p>242.338</p></td>
|
|
|
+<td class="text-right"><p>325.085</p></td>
|
|
|
+<td class="text-right"><p>419.999</p></td>
|
|
|
+<td class="text-right"><p>529.897</p></td>
|
|
|
+</tr>
|
|
|
+<tr class="row-even"><td><p><strong>QRFpdf</strong></p></td>
|
|
|
+<td class="text-right"><p>6.578</p></td>
|
|
|
+<td class="text-right"><p>12.466</p></td>
|
|
|
+<td class="text-right"><p>21.169</p></td>
|
|
|
+<td class="text-right"><p>33.021</p></td>
|
|
|
+<td class="text-right"><p>45.469</p></td>
|
|
|
+<td class="text-right"><p>61.198</p></td>
|
|
|
+<td class="text-right"><p>80.092</p></td>
|
|
|
+<td class="text-right"><p>100.059</p></td>
|
|
|
+</tr>
|
|
|
+<tr class="row-odd"><td><p><strong>QREps</strong></p></td>
|
|
|
+<td class="text-right"><p>1.269</p></td>
|
|
|
+<td class="text-right"><p>2.694</p></td>
|
|
|
+<td class="text-right"><p>4.515</p></td>
|
|
|
+<td class="text-right"><p>6.933</p></td>
|
|
|
+<td class="text-right"><p>11.049</p></td>
|
|
|
+<td class="text-right"><p>14.181</p></td>
|
|
|
+<td class="text-right"><p>20.799</p></td>
|
|
|
+<td class="text-right"><p>25.886</p></td>
|
|
|
+</tr>
|
|
|
+</tbody>
|
|
|
+</table>
|
|
|
+</section>
|
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+</section>
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+
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+
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+ <div role="contentinfo">
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+ <p>© Copyright 2023, smiley.</p>
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