641 lines
45 KiB
HTML
Executable File
641 lines
45 KiB
HTML
Executable File
|
||
|
||
<!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>Connecting to your Database — CodeIgniter 3.1.11 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 3.1.11 documentation" href="../index.html"/>
|
||
<link rel="up" title="Database Reference" href="index.html"/>
|
||
<link rel="next" title="Queries" href="queries.html"/>
|
||
<link rel="prev" title="Database Configuration" href="configuration.html"/>
|
||
|
||
|
||
<script src="https://cdnjs.cloudflare.com/ajax/libs/modernizr/2.6.2/modernizr.min.js"></script>
|
||
|
||
</head>
|
||
|
||
<body class="wy-body-for-nav" role="document">
|
||
|
||
<div id="nav">
|
||
<div id="nav_inner">
|
||
|
||
|
||
|
||
<div id="pulldown-menu" class="ciNav">
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="../general/welcome.html">Welcome to CodeIgniter</a></li>
|
||
</ul>
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="../installation/index.html">Installation Instructions</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../installation/downloads.html">Downloading CodeIgniter</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../installation/index.html">Installation Instructions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../installation/upgrading.html">Upgrading From a Previous Version</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../installation/troubleshooting.html">Troubleshooting</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="../overview/index.html">CodeIgniter Overview</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../overview/getting_started.html">Getting Started</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../overview/at_a_glance.html">CodeIgniter at a Glance</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../overview/features.html">Supported Features</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../overview/appflow.html">Application Flow Chart</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../overview/mvc.html">Model-View-Controller</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../overview/goals.html">Architectural Goals</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="../tutorial/index.html">Tutorial</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../tutorial/static_pages.html">Static pages</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../tutorial/news_section.html">News section</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../tutorial/create_news_items.html">Create news items</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../tutorial/conclusion.html">Conclusion</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="../contributing/index.html">Contributing to CodeIgniter</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../documentation/index.html">Writing CodeIgniter Documentation</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer’s Certificate of Origin 1.1</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="../general/index.html">General Topics</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/urls.html">CodeIgniter URLs</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/controllers.html">Controllers</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/reserved_names.html">Reserved Names</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/views.html">Views</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/models.html">Models</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helpers</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/libraries.html">Using CodeIgniter Libraries</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/creating_libraries.html">Creating Libraries</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/drivers.html">Using CodeIgniter Drivers</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/creating_drivers.html">Creating Drivers</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/core_classes.html">Creating Core System Classes</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/ancillary_classes.html">Creating Ancillary Classes</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/hooks.html">Hooks - Extending the Framework Core</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/autoloader.html">Auto-loading Resources</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/common_functions.html">Common Functions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/compatibility_functions.html">Compatibility Functions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/routing.html">URI Routing</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/errors.html">Error Handling</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/caching.html">Caching</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/profiling.html">Profiling Your Application</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/cli.html">Running via the CLI</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/managing_apps.html">Managing your Applications</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/environments.html">Handling Multiple Environments</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/alternative_php.html">Alternate PHP Syntax for View Files</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/security.html">Security</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/styleguide.html">PHP Style Guide</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="../libraries/index.html">Libraries</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../libraries/benchmark.html">Benchmarking Class</a></li>
|
||
<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 class="current">
|
||
<li class="toctree-l1 current"><a class="reference internal" href="index.html">Database Reference</a><ul class="current">
|
||
<li class="toctree-l2"><a class="reference internal" href="examples.html">Quick Start: Usage Examples</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="configuration.html">Database Configuration</a></li>
|
||
<li class="toctree-l2 current"><a class="current reference internal" href="#">Connecting to a Database</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="queries.html">Running Queries</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="results.html">Generating Query Results</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="helpers.html">Query Helper Functions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="query_builder.html">Query Builder Class</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="transactions.html">Transactions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="metadata.html">Getting MetaData</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="call_function.html">Custom Function Calls</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="caching.html">Query Caching</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="forge.html">Database Manipulation with Database Forge</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="utilities.html">Database Utilities Class</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="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>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
|
||
</div>
|
||
|
||
|
||
</div>
|
||
</div>
|
||
<div id="nav2">
|
||
<a href="#" id="openToc">
|
||
<img src="data:image/jpeg;base64,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" title="Toggle Table of Contents" alt="Toggle Table of Contents" />
|
||
</a>
|
||
</div>
|
||
|
||
<div class="wy-grid-for-nav">
|
||
|
||
|
||
<nav data-toggle="wy-nav-shift" class="wy-nav-side">
|
||
<div class="wy-side-nav-search">
|
||
|
||
<a href="../index.html" class="fa fa-home"> CodeIgniter</a>
|
||
|
||
|
||
<div role="search">
|
||
<form id="rtd-search-form" class="wy-form" action="../search.html" method="get">
|
||
<input type="text" name="q" placeholder="Search docs" />
|
||
<input type="hidden" name="check_keywords" value="yes" />
|
||
<input type="hidden" name="area" value="default" />
|
||
</form>
|
||
</div>
|
||
</div>
|
||
|
||
<div class="wy-menu wy-menu-vertical" data-spy="affix" role="navigation" aria-label="main navigation">
|
||
|
||
|
||
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="../general/welcome.html">Welcome to CodeIgniter</a></li>
|
||
</ul>
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="../installation/index.html">Installation Instructions</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../installation/downloads.html">Downloading CodeIgniter</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../installation/index.html">Installation Instructions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../installation/upgrading.html">Upgrading From a Previous Version</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../installation/troubleshooting.html">Troubleshooting</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="../overview/index.html">CodeIgniter Overview</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../overview/getting_started.html">Getting Started</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../overview/at_a_glance.html">CodeIgniter at a Glance</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../overview/features.html">Supported Features</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../overview/appflow.html">Application Flow Chart</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../overview/mvc.html">Model-View-Controller</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../overview/goals.html">Architectural Goals</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="../tutorial/index.html">Tutorial</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../tutorial/static_pages.html">Static pages</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../tutorial/news_section.html">News section</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../tutorial/create_news_items.html">Create news items</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../tutorial/conclusion.html">Conclusion</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="../contributing/index.html">Contributing to CodeIgniter</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../documentation/index.html">Writing CodeIgniter Documentation</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../DCO.html">Developer’s Certificate of Origin 1.1</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="../general/index.html">General Topics</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/urls.html">CodeIgniter URLs</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/controllers.html">Controllers</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/reserved_names.html">Reserved Names</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/views.html">Views</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/models.html">Models</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/helpers.html">Helpers</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/libraries.html">Using CodeIgniter Libraries</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/creating_libraries.html">Creating Libraries</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/drivers.html">Using CodeIgniter Drivers</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/creating_drivers.html">Creating Drivers</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/core_classes.html">Creating Core System Classes</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/ancillary_classes.html">Creating Ancillary Classes</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/hooks.html">Hooks - Extending the Framework Core</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/autoloader.html">Auto-loading Resources</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/common_functions.html">Common Functions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/compatibility_functions.html">Compatibility Functions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/routing.html">URI Routing</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/errors.html">Error Handling</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/caching.html">Caching</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/profiling.html">Profiling Your Application</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/cli.html">Running via the CLI</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/managing_apps.html">Managing your Applications</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/environments.html">Handling Multiple Environments</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/alternative_php.html">Alternate PHP Syntax for View Files</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/security.html">Security</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="../general/styleguide.html">PHP Style Guide</a></li>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
<ul>
|
||
<li class="toctree-l1"><a class="reference internal" href="../libraries/index.html">Libraries</a><ul>
|
||
<li class="toctree-l2"><a class="reference internal" href="../libraries/benchmark.html">Benchmarking Class</a></li>
|
||
<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 class="current">
|
||
<li class="toctree-l1 current"><a class="reference internal" href="index.html">Database Reference</a><ul class="current">
|
||
<li class="toctree-l2"><a class="reference internal" href="examples.html">Quick Start: Usage Examples</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="configuration.html">Database Configuration</a></li>
|
||
<li class="toctree-l2 current"><a class="current reference internal" href="#">Connecting to a Database</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="queries.html">Running Queries</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="results.html">Generating Query Results</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="helpers.html">Query Helper Functions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="query_builder.html">Query Builder Class</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="transactions.html">Transactions</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="metadata.html">Getting MetaData</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="call_function.html">Custom Function Calls</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="caching.html">Query Caching</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="forge.html">Database Manipulation with Database Forge</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="utilities.html">Database Utilities Class</a></li>
|
||
<li class="toctree-l2"><a class="reference internal" href="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>
|
||
</ul>
|
||
</li>
|
||
</ul>
|
||
|
||
|
||
|
||
</div>
|
||
|
||
</nav>
|
||
|
||
<section data-toggle="wy-nav-shift" class="wy-nav-content-wrap">
|
||
|
||
|
||
<nav class="wy-nav-top" role="navigation" aria-label="top navigation">
|
||
<i data-toggle="wy-nav-top" class="fa fa-bars"></i>
|
||
<a href="../index.html">CodeIgniter</a>
|
||
</nav>
|
||
|
||
|
||
|
||
<div class="wy-nav-content">
|
||
<div class="rst-content">
|
||
<div role="navigation" aria-label="breadcrumbs navigation">
|
||
<ul class="wy-breadcrumbs">
|
||
<li><a href="../index.html">Docs</a> »</li>
|
||
|
||
<li><a href="index.html">Database Reference</a> »</li>
|
||
|
||
<li>Connecting to your Database</li>
|
||
<li class="wy-breadcrumbs-aside">
|
||
|
||
</li>
|
||
<div style="float:right;margin-left:5px;" id="closeMe">
|
||
<img title="Classic Layout" alt="classic layout" src="data:image/gif;base64,R0lGODlhFAAUAJEAAAAAADMzM////wAAACH5BAUUAAIALAAAAAAUABQAAAImlI+py+0PU5gRBRDM3DxbWoXis42X13USOLauUIqnlsaH/eY6UwAAOw==" />
|
||
</div>
|
||
</ul>
|
||
<hr/>
|
||
</div>
|
||
<div role="main" class="document">
|
||
|
||
<div class="section" id="connecting-to-your-database">
|
||
<h1>Connecting to your Database<a class="headerlink" href="#connecting-to-your-database" title="Permalink to this headline">¶</a></h1>
|
||
<p>There are two ways to connect to a database:</p>
|
||
<div class="section" id="automatically-connecting">
|
||
<h2>Automatically Connecting<a class="headerlink" href="#automatically-connecting" title="Permalink to this headline">¶</a></h2>
|
||
<p>The “auto connect” feature will load and instantiate the database class
|
||
with every page load. To enable “auto connecting”, add the word database
|
||
to the library array, as indicated in the following file:</p>
|
||
<p>application/config/autoload.php</p>
|
||
</div>
|
||
<div class="section" id="manually-connecting">
|
||
<h2>Manually Connecting<a class="headerlink" href="#manually-connecting" title="Permalink to this headline">¶</a></h2>
|
||
<p>If only some of your pages require database connectivity you can
|
||
manually connect to your database by adding this line of code in any
|
||
function where it is needed, or in your class constructor to make the
|
||
database available globally in that class.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">database</span><span class="p">();</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>If the above function does <strong>not</strong> contain any information in the first
|
||
parameter it will connect to the group specified in your database config
|
||
file. For most people, this is the preferred method of use.</p>
|
||
<div class="section" id="available-parameters">
|
||
<h3>Available Parameters<a class="headerlink" href="#available-parameters" title="Permalink to this headline">¶</a></h3>
|
||
<ol class="arabic simple">
|
||
<li>The database connection values, passed either as an array or a DSN
|
||
string.</li>
|
||
<li>TRUE/FALSE (boolean). Whether to return the connection ID (see
|
||
Connecting to Multiple Databases below).</li>
|
||
<li>TRUE/FALSE (boolean). Whether to enable the Query Builder class. Set
|
||
to TRUE by default.</li>
|
||
</ol>
|
||
</div>
|
||
<div class="section" id="manually-connecting-to-a-database">
|
||
<h3>Manually Connecting to a Database<a class="headerlink" href="#manually-connecting-to-a-database" title="Permalink to this headline">¶</a></h3>
|
||
<p>The first parameter of this function can <strong>optionally</strong> be used to
|
||
specify a particular database group from your config file, or you can
|
||
even submit connection values for a database that is not specified in
|
||
your config file. Examples:</p>
|
||
<p>To choose a specific group from your config file you can do this:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">database</span><span class="p">(</span><span class="s1">'group_name'</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Where group_name is the name of the connection group from your config
|
||
file.</p>
|
||
<p>To connect manually to a desired database you can pass an array of
|
||
values:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$config</span><span class="p">[</span><span class="s1">'hostname'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'localhost'</span><span class="p">;</span>
|
||
<span class="nv">$config</span><span class="p">[</span><span class="s1">'username'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'myusername'</span><span class="p">;</span>
|
||
<span class="nv">$config</span><span class="p">[</span><span class="s1">'password'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'mypassword'</span><span class="p">;</span>
|
||
<span class="nv">$config</span><span class="p">[</span><span class="s1">'database'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'mydatabase'</span><span class="p">;</span>
|
||
<span class="nv">$config</span><span class="p">[</span><span class="s1">'dbdriver'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'mysqli'</span><span class="p">;</span>
|
||
<span class="nv">$config</span><span class="p">[</span><span class="s1">'dbprefix'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">''</span><span class="p">;</span>
|
||
<span class="nv">$config</span><span class="p">[</span><span class="s1">'pconnect'</span><span class="p">]</span> <span class="o">=</span> <span class="k">FALSE</span><span class="p">;</span>
|
||
<span class="nv">$config</span><span class="p">[</span><span class="s1">'db_debug'</span><span class="p">]</span> <span class="o">=</span> <span class="k">TRUE</span><span class="p">;</span>
|
||
<span class="nv">$config</span><span class="p">[</span><span class="s1">'cache_on'</span><span class="p">]</span> <span class="o">=</span> <span class="k">FALSE</span><span class="p">;</span>
|
||
<span class="nv">$config</span><span class="p">[</span><span class="s1">'cachedir'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">''</span><span class="p">;</span>
|
||
<span class="nv">$config</span><span class="p">[</span><span class="s1">'char_set'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'utf8'</span><span class="p">;</span>
|
||
<span class="nv">$config</span><span class="p">[</span><span class="s1">'dbcollat'</span><span class="p">]</span> <span class="o">=</span> <span class="s1">'utf8_general_ci'</span><span class="p">;</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">database</span><span class="p">(</span><span class="nv">$config</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>For information on each of these values please see the <a class="reference internal" href="configuration.html"><span class="doc">configuration
|
||
page</span></a>.</p>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p>For the PDO driver, you should use the $config[‘dsn’] setting
|
||
instead of ‘hostname’ and ‘database’:</p>
|
||
<div class="last line-block">
|
||
<div class="line"><br /></div>
|
||
<div class="line">$config[‘dsn’] = ‘mysql:host=localhost;dbname=mydatabase’;</div>
|
||
</div>
|
||
</div>
|
||
<p>Or you can submit your database values as a Data Source Name. DSNs must
|
||
have this prototype:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$dsn</span> <span class="o">=</span> <span class="s1">'dbdriver://username:password@hostname/database'</span><span class="p">;</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">database</span><span class="p">(</span><span class="nv">$dsn</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>To override default config values when connecting with a DSN string, add
|
||
the config variables as a query string.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$dsn</span> <span class="o">=</span> <span class="s1">'dbdriver://username:password@hostname/database?char_set=utf8&dbcollat=utf8_general_ci&cache_on=true&cachedir=/path/to/cache'</span><span class="p">;</span>
|
||
<span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">database</span><span class="p">(</span><span class="nv">$dsn</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="connecting-to-multiple-databases">
|
||
<h2>Connecting to Multiple Databases<a class="headerlink" href="#connecting-to-multiple-databases" title="Permalink to this headline">¶</a></h2>
|
||
<p>If you need to connect to more than one database simultaneously you can
|
||
do so as follows:</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$DB1</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">database</span><span class="p">(</span><span class="s1">'group_one'</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span>
|
||
<span class="nv">$DB2</span> <span class="o">=</span> <span class="nv">$this</span><span class="o">-></span><span class="na">load</span><span class="o">-></span><span class="na">database</span><span class="p">(</span><span class="s1">'group_two'</span><span class="p">,</span> <span class="k">TRUE</span><span class="p">);</span>
|
||
</pre></div>
|
||
</div>
|
||
<p>Note: Change the words “group_one” and “group_two” to the specific
|
||
group names you are connecting to (or you can pass the connection values
|
||
as indicated above).</p>
|
||
<p>By setting the second parameter to TRUE (boolean) the function will
|
||
return the database object.</p>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p>When you connect this way, you will use your object name to issue
|
||
commands rather than the syntax used throughout this guide. In other
|
||
words, rather than issuing commands with:</p>
|
||
<div class="last line-block">
|
||
<div class="line"><br /></div>
|
||
<div class="line">$this->db->query();</div>
|
||
<div class="line">$this->db->result();</div>
|
||
<div class="line">etc…</div>
|
||
<div class="line"><br /></div>
|
||
<div class="line">You will instead use:</div>
|
||
<div class="line"><br /></div>
|
||
<div class="line">$DB1->query();</div>
|
||
<div class="line">$DB1->result();</div>
|
||
<div class="line">etc…</div>
|
||
</div>
|
||
</div>
|
||
<div class="admonition note">
|
||
<p class="first admonition-title">Note</p>
|
||
<p>You don’t need to create separate database configurations if you
|
||
only need to use a different database on the same connection. You
|
||
can switch to a different database when you need to, like this:</p>
|
||
<div class="last line-block">
|
||
<div class="line">$this->db->db_select($database2_name);</div>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="reconnecting-keeping-the-connection-alive">
|
||
<h2>Reconnecting / Keeping the Connection Alive<a class="headerlink" href="#reconnecting-keeping-the-connection-alive" title="Permalink to this headline">¶</a></h2>
|
||
<p>If the database server’s idle timeout is exceeded while you’re doing
|
||
some heavy PHP lifting (processing an image, for instance), you should
|
||
consider pinging the server by using the reconnect() method before
|
||
sending further queries, which can gracefully keep the connection alive
|
||
or re-establish it.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">reconnect</span><span class="p">();</span>
|
||
</pre></div>
|
||
</div>
|
||
</div>
|
||
<div class="section" id="manually-closing-the-connection">
|
||
<h2>Manually closing the Connection<a class="headerlink" href="#manually-closing-the-connection" title="Permalink to this headline">¶</a></h2>
|
||
<p>While CodeIgniter intelligently takes care of closing your database
|
||
connections, you can explicitly close the connection.</p>
|
||
<div class="highlight-ci"><div class="highlight"><pre><span></span><span class="nv">$this</span><span class="o">-></span><span class="na">db</span><span class="o">-></span><span class="na">close</span><span class="p">();</span>
|
||
</pre></div>
|
||
</div>
|
||
</div>
|
||
</div>
|
||
|
||
|
||
</div>
|
||
<footer>
|
||
|
||
<div class="rst-footer-buttons" role="navigation" aria-label="footer navigation">
|
||
|
||
<a href="queries.html" class="btn btn-neutral float-right" title="Queries">Next <span class="fa fa-arrow-circle-right"></span></a>
|
||
|
||
|
||
<a href="configuration.html" class="btn btn-neutral" title="Database Configuration"><span class="fa fa-arrow-circle-left"></span> Previous</a>
|
||
|
||
</div>
|
||
|
||
|
||
<hr/>
|
||
|
||
<div role="contentinfo">
|
||
<p>
|
||
© Copyright 2014 - 2019, British Columbia Institute of Technology.
|
||
Last updated on Sep 19, 2019.
|
||
</p>
|
||
</div>
|
||
|
||
Built with <a href="http://sphinx-doc.org/">Sphinx</a> using a <a href="https://github.com/snide/sphinx_rtd_theme">theme</a> provided by <a href="https://readthedocs.org">Read the Docs</a>.
|
||
|
||
</footer>
|
||
</div>
|
||
</div>
|
||
|
||
</section>
|
||
|
||
</div>
|
||
|
||
|
||
|
||
|
||
|
||
<script type="text/javascript">
|
||
var DOCUMENTATION_OPTIONS = {
|
||
URL_ROOT:'../',
|
||
VERSION:'3.1.11',
|
||
COLLAPSE_INDEX:false,
|
||
FILE_SUFFIX:'.html',
|
||
HAS_SOURCE: false
|
||
};
|
||
</script>
|
||
<script type="text/javascript" src="../_static/jquery.js"></script>
|
||
<script type="text/javascript" src="../_static/underscore.js"></script>
|
||
<script type="text/javascript" src="../_static/doctools.js"></script>
|
||
|
||
|
||
|
||
|
||
|
||
<script type="text/javascript" src="../_static/js/theme.js"></script>
|
||
|
||
|
||
|
||
|
||
<script type="text/javascript">
|
||
jQuery(function () {
|
||
SphinxRtdTheme.StickyNav.enable();
|
||
});
|
||
</script>
|
||
|
||
|
||
</body>
|
||
</html> |