mrkad
/
php-qrcode
зеркало из https://github.com/chillerlan/php-qrcode.git


			
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              <p class="caption" role="heading"><span class="caption-text">Usage</span></p>
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<li class="toctree-l1"><a class="reference internal" href="Usage-Overview.html">Overview</a><ul>
<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-Installation.html#supported-php-versions-extension-requirements">Supported PHP versions &amp; extension requirements</a></li>
<li class="toctree-l2"><a class="reference internal" href="Usage-Installation.html#imagemagick">ImageMagick</a></li>
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<li class="toctree-l1 current"><a class="current reference internal" href="#">Quickstart</a><ul>
<li class="toctree-l2"><a class="reference internal" href="#import-the-library">Import the library</a></li>
<li class="toctree-l2"><a class="reference internal" href="#create-your-first-qr-code">Create your first QR Code</a><ul>
<li class="toctree-l3"><a class="reference internal" href="#configuration">Configuration</a></li>
</ul>
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<li class="toctree-l2"><a class="reference internal" href="#reading-qr-codes">Reading QR Codes</a></li>
<li class="toctree-l2"><a class="reference internal" href="#notes">Notes</a></li>
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<li class="toctree-l1"><a class="reference internal" href="Usage-Advanced-usage.html">Advanced usage</a><ul>
<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>
<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>
<li class="toctree-l3"><a class="reference internal" href="Usage-Advanced-usage.html#load-and-save-json">Load and save JSON</a></li>
<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>
</ul>
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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>
<li class="toctree-l3"><a class="reference internal" href="Usage-Advanced-usage.html#save-to-file">Save to file</a></li>
<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>
<li class="toctree-l3"><a class="reference internal" href="Usage-Advanced-usage.html#mixed-mode">Mixed mode</a></li>
<li class="toctree-l3"><a class="reference internal" href="Usage-Advanced-usage.html#qr-code-reader">QR Code reader</a></li>
</ul>
</li>
</ul>
</li>
</ul>
<p class="caption" role="heading"><span class="caption-text">Built-In Output Modules</span></p>
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<li class="toctree-l1"><a class="reference internal" href="Built-In-Output-QREps.html">QREps</a><ul>
<li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QREps.html#example">Example</a></li>
<li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QREps.html#additional-methods">Additional methods</a></li>
<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>
<li class="toctree-l1"><a class="reference internal" href="Appendix-Terminology.html">Terminology</a><ul>
<li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#qr-code">QR Code</a></li>
<li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#matrix">Matrix</a><ul>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#module">Module</a></li>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#version">Version</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#function-patterns">Function Patterns</a><ul>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#finder-pattern">Finder Pattern</a></li>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#alignment-pattern">Alignment Pattern</a></li>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#timing-pattern">Timing Pattern</a></li>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#separators">Separators</a></li>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#quiet-zone">Quiet Zone</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#encoding-region">Encoding Region</a><ul>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#data">Data</a></li>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#version-information">Version Information</a></li>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#format-information">Format Information</a></li>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#darkmodule">Darkmodule</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#mode">Mode</a><ul>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#segment">Segment</a></li>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#extended-channel-interpretation-eci">Extended Channel Interpretation (ECI)</a></li>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#mixed-mode">Mixed Mode</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#ecc-error-correction-coding">ECC (Error Correction Coding)</a><ul>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#ecc-level">ECC Level</a></li>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#maximum-data-capacity">Maximum data capacity</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#data-masking">Data masking</a><ul>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#evaluation">Evaluation</a></li>
<li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#mask-pattern">Mask pattern</a></li>
</ul>
</li>
<li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#reflectance">Reflectance</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="Appendix-URI-Content.html">Popular content and URI schemes</a><ul>
<li class="toctree-l2"><a class="reference internal" href="Appendix-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="Appendix-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="Appendix-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="Appendix-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="Appendix-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="Appendix-URI-Content.html#wireless-network-configuration">Wireless Network configuration</a></li>
<li class="toctree-l2"><a class="reference internal" href="Appendix-URI-Content.html#contact-information-vcard">Contact information: vCard</a></li>
<li class="toctree-l2"><a class="reference internal" href="Appendix-URI-Content.html#calendar-events-vcalendar-and-icalendar">Calendar Events: vCalendar and iCalendar</a></li>
<li class="toctree-l2"><a class="reference internal" href="Appendix-URI-Content.html#see-also">See also</a></li>
</ul>
</li>
<li class="toctree-l1"><a class="reference internal" href="Appendix-License.html">License</a></li>
</ul>

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  <section id="quickstart">
<h1>Quickstart<a class="headerlink" href="#quickstart" title="Link to this heading"></a></h1>
<section id="import-the-library">
<h2>Import the library<a class="headerlink" href="#import-the-library" title="Link to this heading"></a></h2>
<p>Import the main class(es) and include the autoloader (if necessary):</p>
<div class="highlight-php notranslate"><div class="highlight"><pre><span></span><span class="k">use</span> <span class="nx">chillerlan\QRCode\</span><span class="p">{</span><span class="nx">QRCode</span><span class="p">,</span> <span class="nx">QROptions</span><span class="p">};</span>

<span class="k">require_once</span> <span class="no">__DIR__</span><span class="o">.</span><span class="s1">&#39;/../vendor/autoload.php&#39;</span><span class="p">;</span>
</pre></div>
</div>
</section>
<section id="create-your-first-qr-code">
<h2>Create your first QR Code<a class="headerlink" href="#create-your-first-qr-code" title="Link to this heading"></a></h2>
<p>We want to encode this URI for a mobile authenticator into a QRcode image:</p>
<div class="highlight-php notranslate"><div class="highlight"><pre><span></span><span class="nv">$data</span>   <span class="o">=</span> <span class="s1">&#39;otpauth://totp/test?secret=B3JX4VCVJDVNXNZ5&amp;issuer=chillerlan.net&#39;</span><span class="p">;</span>
<span class="nv">$qrcode</span> <span class="o">=</span> <span class="p">(</span><span class="k">new</span> <span class="nx">QRCode</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">render</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span>

<span class="nb">printf</span><span class="p">(</span><span class="s1">&#39;&lt;img src=&quot;%s&quot; alt=&quot;QR Code&quot; /&gt;&#39;</span><span class="p">,</span> <span class="nv">$qrcode</span><span class="p">);</span>
</pre></div>
</div>
<section id="configuration">
<h3>Configuration<a class="headerlink" href="#configuration" title="Link to this heading"></a></h3>
<p>Configuration using <code class="docutils literal notranslate"><span class="pre">QROptions</span></code>:</p>
<div class="highlight-php notranslate"><div class="highlight"><pre><span></span><span class="nv">$options</span> <span class="o">=</span> <span class="k">new</span> <span class="nx">QROptions</span><span class="p">;</span>
<span class="nv">$options</span><span class="o">-&gt;</span><span class="na">version</span>      <span class="o">=</span> <span class="mi">7</span><span class="p">;</span>
<span class="nv">$options</span><span class="o">-&gt;</span><span class="na">outputBase64</span> <span class="o">=</span> <span class="k">false</span><span class="p">;</span> <span class="c1">// output raw image instead of base64 data URI</span>

<span class="nb">header</span><span class="p">(</span><span class="s1">&#39;Content-type: image/svg+xml&#39;</span><span class="p">);</span> <span class="c1">// the image type is SVG by default</span>

<span class="k">echo</span> <span class="p">(</span><span class="k">new</span> <span class="nx">QRCode</span><span class="p">(</span><span class="nv">$options</span><span class="p">))</span><span class="o">-&gt;</span><span class="na">render</span><span class="p">(</span><span class="nv">$data</span><span class="p">);</span>
</pre></div>
</div>
<p>See <a class="reference internal" href="Usage-Advanced-usage.html"><span class="std std-doc">Advanced usage</span></a> for a more in-depth usage guide.
Also, have a look <a class="reference external" href="https://github.com/chillerlan/php-qrcode/tree/main/examples">in the examples folder</a> for some more usage examples.</p>
</section>
</section>
<section id="reading-qr-codes">
<h2>Reading QR Codes<a class="headerlink" href="#reading-qr-codes" title="Link to this heading"></a></h2>
<p>Using the built-in QR Code reader is pretty straight-forward:</p>
<div class="highlight-php notranslate"><div class="highlight"><pre><span></span><span class="k">try</span><span class="p">{</span>
	<span class="nv">$result</span> <span class="o">=</span> <span class="p">(</span><span class="k">new</span> <span class="nx">QRCode</span><span class="p">)</span><span class="o">-&gt;</span><span class="na">readFromFile</span><span class="p">(</span><span class="s1">&#39;path/to/file.png&#39;</span><span class="p">);</span> <span class="c1">// -&gt; DecoderResult</span>
<span class="p">}</span>
<span class="k">catch</span><span class="p">(</span><span class="nx">Throwable</span> <span class="nv">$exception</span><span class="p">){</span>
	<span class="c1">// handle exception...</span>
	<span class="c1">// throw ...</span>
<span class="p">}</span>

<span class="c1">// you can now use the result instance...</span>
<span class="nv">$content</span> <span class="o">=</span> <span class="nv">$result</span><span class="o">-&gt;</span><span class="na">data</span><span class="p">;</span>

<span class="c1">// ...or simply cast the result instance to string to get the content</span>
<span class="nv">$content</span> <span class="o">=</span> <span class="p">(</span><span class="nx">string</span><span class="p">)</span><span class="nv">$result</span><span class="p">;</span>
</pre></div>
</div>
<p>It’s generally a good idea to wrap the reading in a try/catch block to handle any errors that may occur in the process.</p>
</section>
<section id="notes">
<h2>Notes<a class="headerlink" href="#notes" title="Link to this heading"></a></h2>
<p>The QR encoder, especially the subroutines for mask pattern testing, can cause high CPU load on increased matrix size.
You can avoid a part of this load by choosing a fast output module, like SVG.
Oh hey and don’t forget to sanitize any user input!</p>
</section>
</section>


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