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  1. <!DOCTYPE html>
    2. 

  2. <html class="writer-html5" lang="en" >
    3. 

  3. <head>
    4. 

  4.   <meta charset="utf-8" /><meta name="generator" content="Docutils 0.18.1: http://docutils.sourceforge.net/" />
    5. 

  5. 

  6.   <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    7. 

  7.   <title>PHP-QRCode Manual &mdash; PHP-QRCode main
    8. 

  8.  Manual</title>
    9. 

  9.       <link rel="stylesheet" href="_static/pygments.css" type="text/css" />
    10. 

  10.       <link rel="stylesheet" href="_static/css/theme.css" type="text/css" />
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    22. 

  22.     <link rel="search" title="Search" href="search.html" />
    23. 

  23.     <link rel="next" title="Overview" href="Usage-Overview.html" /> 
    24. 

  24. </head>
    25. 

  25. 

  26. <body class="wy-body-for-nav"> 
    27. 

  27.   <div class="wy-grid-for-nav">
    28. 

  28.     <nav data-toggle="wy-nav-shift" class="wy-nav-side">
    29. 

  29.       <div class="wy-side-scroll">
    30. 

  30.         <div class="wy-side-nav-search" >
    31. 

  31. 

  32.           
    33. 

  33.           
    34. 

  34.           <a href="#" class="icon icon-home">
    35. 

  35.             PHP-QRCode
    36. 

  36.           </a>
    37. 

  37. <div role="search">
    38. 

  38.   <form id="rtd-search-form" class="wy-form" action="search.html" method="get">
    39. 

  39.     <input type="text" name="q" placeholder="Search docs" aria-label="Search docs" />
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  40.     <input type="hidden" name="check_keywords" value="yes" />
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  41.     <input type="hidden" name="area" value="default" />
    42. 

  42.   </form>
    43. 

  43. </div>
    44. 

  44.         </div><div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="Navigation menu">
    45. 

  45.               <p class="caption" role="heading"><span class="caption-text">Usage</span></p>
    46. 

  46. <ul>
    47. 

  47. <li class="toctree-l1"><a class="reference internal" href="Usage-Overview.html">Overview</a><ul>
    48. 

  48. <li class="toctree-l2"><a class="reference internal" href="Usage-Overview.html#features">Features</a></li>
    49. 

  49. <li class="toctree-l2"><a class="reference internal" href="Usage-Overview.html#requirements">Requirements</a></li>
    50. 

  50. <li class="toctree-l2"><a class="reference internal" href="Usage-Overview.html#framework-integration">Framework Integration</a></li>
    51. 

  51. <li class="toctree-l2"><a class="reference internal" href="Usage-Overview.html#shameless-advertising">Shameless advertising</a></li>
    52. 

  52. </ul>
    53. 

  53. </li>
    54. 

  54. <li class="toctree-l1"><a class="reference internal" href="Usage-Installation.html">Installation</a><ul>
    55. 

  55. <li class="toctree-l2"><a class="reference internal" href="Usage-Installation.html#installation-with-composer">Installation with Composer</a><ul>
    56. 

  56. <li class="toctree-l3"><a class="reference internal" href="Usage-Installation.html#composer-json">composer.json</a><ul>
    57. 

  57. <li class="toctree-l4"><a class="reference internal" href="Usage-Installation.html#version-switch">Version switch</a></li>
    58. 

  58. </ul>
    59. 

  59. </li>
    60. 

  60. <li class="toctree-l3"><a class="reference internal" href="Usage-Installation.html#terminal">Terminal</a></li>
    61. 

  61. </ul>
    62. 

  62. </li>
    63. 

  63. <li class="toctree-l2"><a class="reference internal" href="Usage-Installation.html#manual-installation">Manual installation</a><ul>
    64. 

  64. <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>
    65. 

  65. </ul>
    66. 

  66. </li>
    67. 

  67. <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>
    68. 

  68. <li class="toctree-l2"><a class="reference internal" href="Usage-Installation.html#imagemagick">ImageMagick</a></li>
    69. 

  69. </ul>
    70. 

  70. </li>
    71. 

  71. <li class="toctree-l1"><a class="reference internal" href="Usage-Quickstart.html">Quickstart</a><ul>
    72. 

  72. <li class="toctree-l2"><a class="reference internal" href="Usage-Quickstart.html#import-the-library">Import the library</a></li>
    73. 

  73. <li class="toctree-l2"><a class="reference internal" href="Usage-Quickstart.html#create-your-first-qr-code">Create your first QR Code</a><ul>
    74. 

  74. <li class="toctree-l3"><a class="reference internal" href="Usage-Quickstart.html#configuration">Configuration</a></li>
    75. 

  75. </ul>
    76. 

  76. </li>
    77. 

  77. <li class="toctree-l2"><a class="reference internal" href="Usage-Quickstart.html#reading-qr-codes">Reading QR Codes</a></li>
    78. 

  78. <li class="toctree-l2"><a class="reference internal" href="Usage-Quickstart.html#notes">Notes</a></li>
    79. 

  79. </ul>
    80. 

  80. </li>
    81. 

  81. <li class="toctree-l1"><a class="reference internal" href="Usage-Advanced-usage.html">Advanced usage</a><ul>
    82. 

  82. <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>
    83. 

  83. <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>
    84. 

  84. <li class="toctree-l3"><a class="reference internal" href="Usage-Advanced-usage.html#load-and-save-json">Load and save JSON</a></li>
    85. 

  85. <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>
    86. 

  86. </ul>
    87. 

  87. </li>
    88. 

  88. <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>
    89. 

  89. <li class="toctree-l3"><a class="reference internal" href="Usage-Advanced-usage.html#save-to-file">Save to file</a></li>
    90. 

  90. <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>
    91. 

  91. <li class="toctree-l3"><a class="reference internal" href="Usage-Advanced-usage.html#mixed-mode">Mixed mode</a></li>
    92. 

  92. <li class="toctree-l3"><a class="reference internal" href="Usage-Advanced-usage.html#qr-code-reader">QR Code reader</a></li>
    93. 

  93. </ul>
    94. 

  94. </li>
    95. 

  95. </ul>
    96. 

  96. </li>
    97. 

  97. </ul>
    98. 

  98. <p class="caption" role="heading"><span class="caption-text">Built-In Output Modules</span></p>
    99. 

  99. <ul>
    100. 

  100. <li class="toctree-l1"><a class="reference internal" href="Built-In-Output-QREps.html">QREps</a><ul>
    101. 

  101. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QREps.html#example">Example</a></li>
    102. 

  102. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QREps.html#additional-methods">Additional methods</a></li>
    103. 

  103. <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>
    104. 

  104. <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>
    105. 

  105. </ul>
    106. 

  106. </li>
    107. 

  107. </ul>
    108. 

  108. </li>
    109. 

  109. <li class="toctree-l1"><a class="reference internal" href="Built-In-Output-QRFpdf.html">QRFpdf</a><ul>
    110. 

  110. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRFpdf.html#example">Example</a></li>
    111. 

  111. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRFpdf.html#additional-methods">Additional methods</a></li>
    112. 

  112. <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>
    113. 

  113. <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>
    114. 

  114. </ul>
    115. 

  115. </li>
    116. 

  116. </ul>
    117. 

  117. </li>
    118. 

  118. <li class="toctree-l1"><a class="reference internal" href="Built-In-Output-QRGdImage.html">QRGdImage</a><ul>
    119. 

  119. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRGdImage.html#example">Example</a></li>
    120. 

  120. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRGdImage.html#additional-methods">Additional methods</a></li>
    121. 

  121. <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>
    122. 

  122. <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>
    123. 

  123. </ul>
    124. 

  124. </li>
    125. 

  125. </ul>
    126. 

  126. </li>
    127. 

  127. <li class="toctree-l1"><a class="reference internal" href="Built-In-Output-QRImagick.html">QRImagick</a><ul>
    128. 

  128. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRImagick.html#example">Example</a></li>
    129. 

  129. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRImagick.html#additional-methods">Additional methods</a></li>
    130. 

  130. <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>
    131. 

  131. <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>
    132. 

  132. </ul>
    133. 

  133. </li>
    134. 

  134. </ul>
    135. 

  135. </li>
    136. 

  136. <li class="toctree-l1"><a class="reference internal" href="Built-In-Output-QRMarkupHTML.html">QRMarkupHTML</a><ul>
    137. 

  137. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRMarkupHTML.html#example">Example</a></li>
    138. 

  138. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRMarkupHTML.html#additional-methods">Additional methods</a></li>
    139. 

  139. <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>
    140. 

  140. <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>
    141. 

  141. </ul>
    142. 

  142. </li>
    143. 

  143. </ul>
    144. 

  144. </li>
    145. 

  145. <li class="toctree-l1"><a class="reference internal" href="Built-In-Output-QRMarkupSVG.html">QRMarkupSVG</a><ul>
    146. 

  146. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRMarkupSVG.html#example">Example</a></li>
    147. 

  147. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRMarkupSVG.html#additional-methods">Additional methods</a></li>
    148. 

  148. <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>
    149. 

  149. <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>
    150. 

  150. </ul>
    151. 

  151. </li>
    152. 

  152. </ul>
    153. 

  153. </li>
    154. 

  154. <li class="toctree-l1"><a class="reference internal" href="Built-In-Output-QRString.html">QRString</a><ul>
    155. 

  155. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRString.html#plain-text">Plain text</a></li>
    156. 

  156. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRString.html#json">JSON</a></li>
    157. 

  157. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRString.html#additional-methods">Additional methods</a></li>
    158. 

  158. <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>
    159. 

  159. <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>
    160. 

  160. </ul>
    161. 

  161. </li>
    162. 

  162. </ul>
    163. 

  163. </li>
    164. 

  164. </ul>
    165. 

  165. <p class="caption" role="heading"><span class="caption-text">Public API</span></p>
    166. 

  166. <ul>
    167. 

  167. <li class="toctree-l1"><a class="reference internal" href="API-QRCode.html">QRCode</a><ul>
    168. 

  168. <li class="toctree-l2"><a class="reference internal" href="API-QRCode.html#methods">Methods</a><ul>
    169. 

  169. <li class="toctree-l3"><a class="reference internal" href="API-QRCode.html#deprecated-methods">Deprecated methods</a></li>
    170. 

  170. </ul>
    171. 

  171. </li>
    172. 

  172. <li class="toctree-l2"><a class="reference internal" href="API-QRCode.html#constants">Constants</a><ul>
    173. 

  173. <li class="toctree-l3"><a class="reference internal" href="API-QRCode.html#deprecated-constants">Deprecated constants</a></li>
    174. 

  174. </ul>
    175. 

  175. </li>
    176. 

  176. </ul>
    177. 

  177. </li>
    178. 

  178. <li class="toctree-l1"><a class="reference internal" href="API-QROptions.html">QROptions</a><ul>
    179. 

  179. <li class="toctree-l2"><a class="reference internal" href="API-QROptions.html#methods">Methods</a></li>
    180. 

  180. <li class="toctree-l2"><a class="reference internal" href="API-QROptions.html#properties">Properties</a></li>
    181. 

  181. </ul>
    182. 

  182. </li>
    183. 

  183. <li class="toctree-l1"><a class="reference internal" href="API-QROutputInterface.html">QROutputInterface</a><ul>
    184. 

  184. <li class="toctree-l2"><a class="reference internal" href="API-QROutputInterface.html#methods">Methods</a></li>
    185. 

  185. <li class="toctree-l2"><a class="reference internal" href="API-QROutputInterface.html#constants">Constants</a></li>
    186. 

  186. </ul>
    187. 

  187. </li>
    188. 

  188. <li class="toctree-l1"><a class="reference internal" href="API-QRMatrix.html">QRMatrix</a><ul>
    189. 

  189. <li class="toctree-l2"><a class="reference internal" href="API-QRMatrix.html#methods">Methods</a><ul>
    190. 

  190. <li class="toctree-l3"><a class="reference internal" href="API-QRMatrix.html#deprecated-methods">Deprecated methods</a></li>
    191. 

  191. </ul>
    192. 

  192. </li>
    193. 

  193. <li class="toctree-l2"><a class="reference internal" href="API-QRMatrix.html#constants">Constants</a></li>
    194. 

  194. </ul>
    195. 

  195. </li>
    196. 

  196. <li class="toctree-l1"><a class="reference internal" href="API-DecoderResult.html">DecoderResult</a><ul>
    197. 

  197. <li class="toctree-l2"><a class="reference internal" href="API-DecoderResult.html#methods">Methods</a></li>
    198. 

  198. <li class="toctree-l2"><a class="reference internal" href="API-DecoderResult.html#magic-properties-read-only">Magic Properties (read-only)</a></li>
    199. 

  199. </ul>
    200. 

  200. </li>
    201. 

  201. </ul>
    202. 

  202. <p class="caption" role="heading"><span class="caption-text">Appendix</span></p>
    203. 

  203. <ul>
    204. 

  204. <li class="toctree-l1"><a class="reference internal" href="Appendix-Terminology.html">Terminology</a><ul>
    205. 

  205. <li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#qr-code">QR Code</a></li>
    206. 

  206. <li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#matrix">Matrix</a><ul>
    207. 

  207. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#module">Module</a></li>
    208. 

  208. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#version">Version</a></li>
    209. 

  209. </ul>
    210. 

  210. </li>
    211. 

  211. <li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#function-patterns">Function Patterns</a><ul>
    212. 

  212. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#finder-pattern">Finder Pattern</a></li>
    213. 

  213. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#alignment-pattern">Alignment Pattern</a></li>
    214. 

  214. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#timing-pattern">Timing Pattern</a></li>
    215. 

  215. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#separators">Separators</a></li>
    216. 

  216. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#quiet-zone">Quiet Zone</a></li>
    217. 

  217. </ul>
    218. 

  218. </li>
    219. 

  219. <li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#encoding-region">Encoding Region</a><ul>
    220. 

  220. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#data">Data</a></li>
    221. 

  221. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#version-information">Version Information</a></li>
    222. 

  222. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#format-information">Format Information</a></li>
    223. 

  223. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#darkmodule">Darkmodule</a></li>
    224. 

  224. </ul>
    225. 

  225. </li>
    226. 

  226. <li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#mode">Mode</a><ul>
    227. 

  227. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#segment">Segment</a></li>
    228. 

  228. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#extended-channel-interpretation-eci">Extended Channel Interpretation (ECI)</a></li>
    229. 

  229. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#mixed-mode">Mixed Mode</a></li>
    230. 

  230. </ul>
    231. 

  231. </li>
    232. 

  232. <li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#ecc-error-correction-coding">ECC (Error Correction Coding)</a><ul>
    233. 

  233. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#ecc-level">ECC Level</a></li>
    234. 

  234. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#maximum-data-capacity">Maximum data capacity</a></li>
    235. 

  235. </ul>
    236. 

  236. </li>
    237. 

  237. <li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#data-masking">Data masking</a><ul>
    238. 

  238. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#evaluation">Evaluation</a></li>
    239. 

  239. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#mask-pattern">Mask pattern</a></li>
    240. 

  240. </ul>
    241. 

  241. </li>
    242. 

  242. <li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#reflectance">Reflectance</a></li>
    243. 

  243. </ul>
    244. 

  244. </li>
    245. 

  245. <li class="toctree-l1"><a class="reference internal" href="Appendix-URI-Content.html">Popular content and URI schemes</a><ul>
    246. 

  246. <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>
    247. 

  247. <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>
    248. 

  248. <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>
    249. 

  249. <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>
    250. 

  250. <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>
    251. 

  251. <li class="toctree-l2"><a class="reference internal" href="Appendix-URI-Content.html#wireless-network-configuration">Wireless Network configuration</a></li>
    252. 

  252. <li class="toctree-l2"><a class="reference internal" href="Appendix-URI-Content.html#contact-information-vcard">Contact information: vCard</a></li>
    253. 

  253. <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>
    254. 

  254. <li class="toctree-l2"><a class="reference internal" href="Appendix-URI-Content.html#see-also">See also</a></li>
    255. 

  255. </ul>
    256. 

  256. </li>
    257. 

  257. <li class="toctree-l1"><a class="reference internal" href="Appendix-License.html">License</a></li>
    258. 

  258. </ul>
    259. 

  259. 

  260.         </div>
    261. 

  261.       </div>
    262. 

  262.     </nav>
    263. 

  263. 

  264.     <section data-toggle="wy-nav-shift" class="wy-nav-content-wrap"><nav class="wy-nav-top" aria-label="Mobile navigation menu" >
    265. 

  265.           <i data-toggle="wy-nav-top" class="fa fa-bars"></i>
    266. 

  266.           <a href="#">PHP-QRCode</a>
    267. 

  267.       </nav>
    268. 

  268. 

  269.       <div class="wy-nav-content">
    270. 

  270.         <div class="rst-content">
    271. 

  271.           <div role="navigation" aria-label="Page navigation">
    272. 

  272.   <ul class="wy-breadcrumbs">
    273. 

  273.       <li><a href="#" class="icon icon-home" aria-label="Home"></a></li>
    274. 

  274.       <li class="breadcrumb-item active">PHP-QRCode Manual</li>
    275. 

  275.       <li class="wy-breadcrumbs-aside">
    276. 

  276.               <a href="https://github.com/chillerlan/php-qrcode/blob/main/docs/index.rst" class="fa fa-github"> Edit on GitHub</a>
    277. 

  277.       </li>
    278. 

  278.   </ul>
    279. 

  279.   <hr/>
    280. 

  280. </div>
    281. 

  281.           <div role="main" class="document" itemscope="itemscope" itemtype="http://schema.org/Article">
    282. 

  282.            <div itemprop="articleBody">
    283. 

  283.              
    284. 

  284.   <section id="php-qrcode-manual">
    285. 

  285. <h1>PHP-QRCode Manual<a class="headerlink" href="#php-qrcode-manual" title="Link to this heading"></a></h1>
    286. 

  286. <p>Edition for <a class="reference external" href="https://github.com/chillerlan/php-qrcode/">chillerlan/php-qrcode</a>  [main]. Updated on Sep 18, 2023.</p>
    287. 

  287. <p>This work is licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0) License.</p>
    288. 

  288. <div class="toctree-wrapper compound">
    289. 

  289. <p class="caption" role="heading"><span class="caption-text">Usage</span></p>
    290. 

  290. <ul>
    291. 

  291. <li class="toctree-l1"><a class="reference internal" href="Usage-Overview.html">Overview</a><ul>
    292. 

  292. <li class="toctree-l2"><a class="reference internal" href="Usage-Overview.html#features">Features</a></li>
    293. 

  293. <li class="toctree-l2"><a class="reference internal" href="Usage-Overview.html#requirements">Requirements</a></li>
    294. 

  294. <li class="toctree-l2"><a class="reference internal" href="Usage-Overview.html#framework-integration">Framework Integration</a></li>
    295. 

  295. <li class="toctree-l2"><a class="reference internal" href="Usage-Overview.html#shameless-advertising">Shameless advertising</a></li>
    296. 

  296. </ul>
    297. 

  297. </li>
    298. 

  298. <li class="toctree-l1"><a class="reference internal" href="Usage-Installation.html">Installation</a><ul>
    299. 

  299. <li class="toctree-l2"><a class="reference internal" href="Usage-Installation.html#installation-with-composer">Installation with Composer</a><ul>
    300. 

  300. <li class="toctree-l3"><a class="reference internal" href="Usage-Installation.html#composer-json">composer.json</a></li>
    301. 

  301. <li class="toctree-l3"><a class="reference internal" href="Usage-Installation.html#terminal">Terminal</a></li>
    302. 

  302. </ul>
    303. 

  303. </li>
    304. 

  304. <li class="toctree-l2"><a class="reference internal" href="Usage-Installation.html#manual-installation">Manual installation</a><ul>
    305. 

  305. <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>
    306. 

  306. </ul>
    307. 

  307. </li>
    308. 

  308. <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>
    309. 

  309. <li class="toctree-l2"><a class="reference internal" href="Usage-Installation.html#imagemagick">ImageMagick</a></li>
    310. 

  310. </ul>
    311. 

  311. </li>
    312. 

  312. <li class="toctree-l1"><a class="reference internal" href="Usage-Quickstart.html">Quickstart</a><ul>
    313. 

  313. <li class="toctree-l2"><a class="reference internal" href="Usage-Quickstart.html#import-the-library">Import the library</a></li>
    314. 

  314. <li class="toctree-l2"><a class="reference internal" href="Usage-Quickstart.html#create-your-first-qr-code">Create your first QR Code</a><ul>
    315. 

  315. <li class="toctree-l3"><a class="reference internal" href="Usage-Quickstart.html#configuration">Configuration</a></li>
    316. 

  316. </ul>
    317. 

  317. </li>
    318. 

  318. <li class="toctree-l2"><a class="reference internal" href="Usage-Quickstart.html#reading-qr-codes">Reading QR Codes</a></li>
    319. 

  319. <li class="toctree-l2"><a class="reference internal" href="Usage-Quickstart.html#notes">Notes</a></li>
    320. 

  320. </ul>
    321. 

  321. </li>
    322. 

  322. <li class="toctree-l1"><a class="reference internal" href="Usage-Advanced-usage.html">Advanced usage</a><ul>
    323. 

  323. <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>
    324. 

  324. <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>
    325. 

  325. <li class="toctree-l3"><a class="reference internal" href="Usage-Advanced-usage.html#load-and-save-json">Load and save JSON</a></li>
    326. 

  326. <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>
    327. 

  327. </ul>
    328. 

  328. </li>
    329. 

  329. <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>
    330. 

  330. <li class="toctree-l3"><a class="reference internal" href="Usage-Advanced-usage.html#save-to-file">Save to file</a></li>
    331. 

  331. <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>
    332. 

  332. <li class="toctree-l3"><a class="reference internal" href="Usage-Advanced-usage.html#mixed-mode">Mixed mode</a></li>
    333. 

  333. <li class="toctree-l3"><a class="reference internal" href="Usage-Advanced-usage.html#qr-code-reader">QR Code reader</a></li>
    334. 

  334. </ul>
    335. 

  335. </li>
    336. 

  336. </ul>
    337. 

  337. </li>
    338. 

  338. </ul>
    339. 

  339. </div>
    340. 

  340. <div class="toctree-wrapper compound">
    341. 

  341. <p class="caption" role="heading"><span class="caption-text">Built-In Output Modules</span></p>
    342. 

  342. <ul>
    343. 

  343. <li class="toctree-l1"><a class="reference internal" href="Built-In-Output-QREps.html">QREps</a><ul>
    344. 

  344. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QREps.html#example">Example</a></li>
    345. 

  345. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QREps.html#additional-methods">Additional methods</a></li>
    346. 

  346. <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>
    347. 

  347. <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>
    348. 

  348. </ul>
    349. 

  349. </li>
    350. 

  350. </ul>
    351. 

  351. </li>
    352. 

  352. <li class="toctree-l1"><a class="reference internal" href="Built-In-Output-QRFpdf.html">QRFpdf</a><ul>
    353. 

  353. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRFpdf.html#example">Example</a></li>
    354. 

  354. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRFpdf.html#additional-methods">Additional methods</a></li>
    355. 

  355. <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>
    356. 

  356. <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>
    357. 

  357. </ul>
    358. 

  358. </li>
    359. 

  359. </ul>
    360. 

  360. </li>
    361. 

  361. <li class="toctree-l1"><a class="reference internal" href="Built-In-Output-QRGdImage.html">QRGdImage</a><ul>
    362. 

  362. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRGdImage.html#example">Example</a></li>
    363. 

  363. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRGdImage.html#additional-methods">Additional methods</a></li>
    364. 

  364. <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>
    365. 

  365. <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>
    366. 

  366. </ul>
    367. 

  367. </li>
    368. 

  368. </ul>
    369. 

  369. </li>
    370. 

  370. <li class="toctree-l1"><a class="reference internal" href="Built-In-Output-QRImagick.html">QRImagick</a><ul>
    371. 

  371. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRImagick.html#example">Example</a></li>
    372. 

  372. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRImagick.html#additional-methods">Additional methods</a></li>
    373. 

  373. <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>
    374. 

  374. <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>
    375. 

  375. </ul>
    376. 

  376. </li>
    377. 

  377. </ul>
    378. 

  378. </li>
    379. 

  379. <li class="toctree-l1"><a class="reference internal" href="Built-In-Output-QRMarkupHTML.html">QRMarkupHTML</a><ul>
    380. 

  380. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRMarkupHTML.html#example">Example</a></li>
    381. 

  381. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRMarkupHTML.html#additional-methods">Additional methods</a></li>
    382. 

  382. <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>
    383. 

  383. <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>
    384. 

  384. </ul>
    385. 

  385. </li>
    386. 

  386. </ul>
    387. 

  387. </li>
    388. 

  388. <li class="toctree-l1"><a class="reference internal" href="Built-In-Output-QRMarkupSVG.html">QRMarkupSVG</a><ul>
    389. 

  389. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRMarkupSVG.html#example">Example</a></li>
    390. 

  390. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRMarkupSVG.html#additional-methods">Additional methods</a></li>
    391. 

  391. <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>
    392. 

  392. <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>
    393. 

  393. </ul>
    394. 

  394. </li>
    395. 

  395. </ul>
    396. 

  396. </li>
    397. 

  397. <li class="toctree-l1"><a class="reference internal" href="Built-In-Output-QRString.html">QRString</a><ul>
    398. 

  398. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRString.html#plain-text">Plain text</a></li>
    399. 

  399. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRString.html#json">JSON</a></li>
    400. 

  400. <li class="toctree-l2"><a class="reference internal" href="Built-In-Output-QRString.html#additional-methods">Additional methods</a></li>
    401. 

  401. <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>
    402. 

  402. <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>
    403. 

  403. </ul>
    404. 

  404. </li>
    405. 

  405. </ul>
    406. 

  406. </li>
    407. 

  407. </ul>
    408. 

  408. </div>
    409. 

  409. <div class="toctree-wrapper compound">
    410. 

  410. <p class="caption" role="heading"><span class="caption-text">Public API</span></p>
    411. 

  411. <ul>
    412. 

  412. <li class="toctree-l1"><a class="reference internal" href="API-QRCode.html">QRCode</a><ul>
    413. 

  413. <li class="toctree-l2"><a class="reference internal" href="API-QRCode.html#methods">Methods</a><ul>
    414. 

  414. <li class="toctree-l3"><a class="reference internal" href="API-QRCode.html#deprecated-methods">Deprecated methods</a></li>
    415. 

  415. </ul>
    416. 

  416. </li>
    417. 

  417. <li class="toctree-l2"><a class="reference internal" href="API-QRCode.html#constants">Constants</a><ul>
    418. 

  418. <li class="toctree-l3"><a class="reference internal" href="API-QRCode.html#deprecated-constants">Deprecated constants</a></li>
    419. 

  419. </ul>
    420. 

  420. </li>
    421. 

  421. </ul>
    422. 

  422. </li>
    423. 

  423. <li class="toctree-l1"><a class="reference internal" href="API-QROptions.html">QROptions</a><ul>
    424. 

  424. <li class="toctree-l2"><a class="reference internal" href="API-QROptions.html#methods">Methods</a></li>
    425. 

  425. <li class="toctree-l2"><a class="reference internal" href="API-QROptions.html#properties">Properties</a></li>
    426. 

  426. </ul>
    427. 

  427. </li>
    428. 

  428. <li class="toctree-l1"><a class="reference internal" href="API-QROutputInterface.html">QROutputInterface</a><ul>
    429. 

  429. <li class="toctree-l2"><a class="reference internal" href="API-QROutputInterface.html#methods">Methods</a></li>
    430. 

  430. <li class="toctree-l2"><a class="reference internal" href="API-QROutputInterface.html#constants">Constants</a></li>
    431. 

  431. </ul>
    432. 

  432. </li>
    433. 

  433. <li class="toctree-l1"><a class="reference internal" href="API-QRMatrix.html">QRMatrix</a><ul>
    434. 

  434. <li class="toctree-l2"><a class="reference internal" href="API-QRMatrix.html#methods">Methods</a><ul>
    435. 

  435. <li class="toctree-l3"><a class="reference internal" href="API-QRMatrix.html#deprecated-methods">Deprecated methods</a></li>
    436. 

  436. </ul>
    437. 

  437. </li>
    438. 

  438. <li class="toctree-l2"><a class="reference internal" href="API-QRMatrix.html#constants">Constants</a></li>
    439. 

  439. </ul>
    440. 

  440. </li>
    441. 

  441. <li class="toctree-l1"><a class="reference internal" href="API-DecoderResult.html">DecoderResult</a><ul>
    442. 

  442. <li class="toctree-l2"><a class="reference internal" href="API-DecoderResult.html#methods">Methods</a></li>
    443. 

  443. <li class="toctree-l2"><a class="reference internal" href="API-DecoderResult.html#magic-properties-read-only">Magic Properties (read-only)</a></li>
    444. 

  444. </ul>
    445. 

  445. </li>
    446. 

  446. </ul>
    447. 

  447. </div>
    448. 

  448. <div class="toctree-wrapper compound">
    449. 

  449. <p class="caption" role="heading"><span class="caption-text">Appendix</span></p>
    450. 

  450. <ul>
    451. 

  451. <li class="toctree-l1"><a class="reference internal" href="Appendix-Terminology.html">Terminology</a><ul>
    452. 

  452. <li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#qr-code">QR Code</a></li>
    453. 

  453. <li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#matrix">Matrix</a><ul>
    454. 

  454. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#module">Module</a></li>
    455. 

  455. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#version">Version</a></li>
    456. 

  456. </ul>
    457. 

  457. </li>
    458. 

  458. <li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#function-patterns">Function Patterns</a><ul>
    459. 

  459. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#finder-pattern">Finder Pattern</a></li>
    460. 

  460. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#alignment-pattern">Alignment Pattern</a></li>
    461. 

  461. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#timing-pattern">Timing Pattern</a></li>
    462. 

  462. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#separators">Separators</a></li>
    463. 

  463. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#quiet-zone">Quiet Zone</a></li>
    464. 

  464. </ul>
    465. 

  465. </li>
    466. 

  466. <li class="toctree-l2"><a class="reference internal" href="Appendix-Terminology.html#encoding-region">Encoding Region</a><ul>
    467. 

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    468. 

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    469. 

  469. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#format-information">Format Information</a></li>
    470. 

  470. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#darkmodule">Darkmodule</a></li>
    471. 

  471. </ul>
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    474. 

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    475. 

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    486. 

  486. <li class="toctree-l3"><a class="reference internal" href="Appendix-Terminology.html#mask-pattern">Mask pattern</a></li>
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  487. </ul>
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    494. 

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    495. 

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    496. 

  496. <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>
    497. 

  497. <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>
    498. 

  498. <li class="toctree-l2"><a class="reference internal" href="Appendix-URI-Content.html#wireless-network-configuration">Wireless Network configuration</a></li>
    499. 

  499. <li class="toctree-l2"><a class="reference internal" href="Appendix-URI-Content.html#contact-information-vcard">Contact information: vCard</a></li>
    500. 

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  501. <li class="toctree-l2"><a class="reference internal" href="Appendix-URI-Content.html#see-also">See also</a></li>
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