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<!DOCTYPE html>
<!--[if IE 8]><html class="no-js lt-ie9" lang="en" > <![endif]-->
<!--[if gt IE 8]><!--> <html class="no-js" lang="en" > <!--<![endif]-->
<head>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Developer’s Certificate of Origin 1.1 — CodeIgniter 3.1.9 documentation</title>
<link rel="shortcut icon" href="_static/ci-icon.ico"/>
<link href='https://fonts.googleapis.com/css?family=Lato:400,700,400italic,700italic|Roboto+Slab:400,700|Inconsolata:400,700&subset=latin,cyrillic' rel='stylesheet' type='text/css'>
<link rel="stylesheet" href="_static/css/citheme.css" type="text/css" />
<link rel="index" title="Index"
href="genindex.html"/>
<link rel="search" title="Search" href="search.html"/>
<link rel="top" title="CodeIgniter 3.1.9 documentation" href="index.html"/>
<link rel="up" title="Contributing to CodeIgniter" href="contributing/index.html"/>
<link rel="next" title="General Topics" href="general/index.html"/>
<link rel="prev" title="Writing CodeIgniter Documentation" href="documentation/index.html"/>
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<li class="toctree-l2 current"><a class="current reference internal" href="#">Developer’s Certificate of Origin 1.1</a></li>
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<li class="toctree-l2"><a class="reference internal" href="general/alternative_php.html">Alternate PHP Syntax for View Files</a></li>
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<li class="toctree-l2"><a class="reference internal" href="general/styleguide.html">PHP Style Guide</a></li>
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<li class="toctree-l2"><a class="reference internal" href="libraries/caching.html">Caching Driver</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/calendar.html">Calendaring Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/cart.html">Shopping Cart Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/config.html">Config Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/email.html">Email Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/encrypt.html">Encrypt Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/encryption.html">Encryption Library</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/file_uploading.html">File Uploading Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/form_validation.html">Form Validation</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/ftp.html">FTP Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/image_lib.html">Image Manipulation Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/input.html">Input Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/javascript.html">Javascript Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/language.html">Language Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/loader.html">Loader Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/migration.html">Migrations Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/output.html">Output Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/pagination.html">Pagination Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/parser.html">Template Parser Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/security.html">Security Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/sessions.html">Session Library</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/table.html">HTML Table Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/trackback.html">Trackback Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/typography.html">Typography Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/unit_testing.html">Unit Testing Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/uri.html">URI Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/user_agent.html">User Agent Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/xmlrpc.html">XML-RPC and XML-RPC Server Classes</a></li>
<li class="toctree-l2"><a class="reference internal" href="libraries/zip.html">Zip Encoding Class</a></li>
</ul>
</li>
</ul>
<ul>
<li class="toctree-l1"><a class="reference internal" href="database/index.html">Database Reference</a><ul>
<li class="toctree-l2"><a class="reference internal" href="database/examples.html">Quick Start: Usage Examples</a></li>
<li class="toctree-l2"><a class="reference internal" href="database/configuration.html">Database Configuration</a></li>
<li class="toctree-l2"><a class="reference internal" href="database/connecting.html">Connecting to a Database</a></li>
<li class="toctree-l2"><a class="reference internal" href="database/queries.html">Running Queries</a></li>
<li class="toctree-l2"><a class="reference internal" href="database/results.html">Generating Query Results</a></li>
<li class="toctree-l2"><a class="reference internal" href="database/helpers.html">Query Helper Functions</a></li>
<li class="toctree-l2"><a class="reference internal" href="database/query_builder.html">Query Builder Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="database/transactions.html">Transactions</a></li>
<li class="toctree-l2"><a class="reference internal" href="database/metadata.html">Getting MetaData</a></li>
<li class="toctree-l2"><a class="reference internal" href="database/call_function.html">Custom Function Calls</a></li>
<li class="toctree-l2"><a class="reference internal" href="database/caching.html">Query Caching</a></li>
<li class="toctree-l2"><a class="reference internal" href="database/forge.html">Database Manipulation with Database Forge</a></li>
<li class="toctree-l2"><a class="reference internal" href="database/utilities.html">Database Utilities Class</a></li>
<li class="toctree-l2"><a class="reference internal" href="database/db_driver_reference.html">Database Driver Reference</a></li>
</ul>
</li>
</ul>
<ul>
<li class="toctree-l1"><a class="reference internal" href="helpers/index.html">Helpers</a><ul>
<li class="toctree-l2"><a class="reference internal" href="helpers/array_helper.html">Array Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/captcha_helper.html">CAPTCHA Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/cookie_helper.html">Cookie Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/date_helper.html">Date Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/directory_helper.html">Directory Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/download_helper.html">Download Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/email_helper.html">Email Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/file_helper.html">File Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/form_helper.html">Form Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/html_helper.html">HTML Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/inflector_helper.html">Inflector Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/language_helper.html">Language Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/number_helper.html">Number Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/path_helper.html">Path Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/security_helper.html">Security Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/smiley_helper.html">Smiley Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/string_helper.html">String Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/text_helper.html">Text Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/typography_helper.html">Typography Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/url_helper.html">URL Helper</a></li>
<li class="toctree-l2"><a class="reference internal" href="helpers/xml_helper.html">XML Helper</a></li>
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<h1>Developer’s Certificate of Origin 1.1<a class="headerlink" href="#developer-s-certificate-of-origin-1-1" title="Permalink to this headline">¶</a></h1>
<p>By making a contribution to this project, I certify that:</p>
<ol class="arabic simple">
<li>The contribution was created in whole or in part by me and I
have the right to submit it under the open source license
indicated in the file; or</li>
<li>The contribution is based upon previous work that, to the best
of my knowledge, is covered under an appropriate open source
license and I have the right under that license to submit that
work with modifications, whether created in whole or in part
by me, under the same open source license (unless I am
permitted to submit under a different license), as indicated
in the file; or</li>
<li>The contribution was provided directly to me by some other
person who certified (1), (2) or (3) and I have not modified
it.</li>
<li>I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.</li>
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