| 1 |
lars |
1 |
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
|
|
|
2 |
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
|
|
|
3 |
<head>
|
|
|
4 |
|
|
|
5 |
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
|
|
|
6 |
<title>Database Configuration : CodeIgniter User Guide</title>
|
|
|
7 |
|
|
|
8 |
<style type='text/css' media='all'>@import url('../userguide.css');</style>
|
|
|
9 |
<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />
|
|
|
10 |
|
|
|
11 |
<script type="text/javascript" src="../nav/nav.js"></script>
|
|
|
12 |
<script type="text/javascript" src="../nav/prototype.lite.js"></script>
|
|
|
13 |
<script type="text/javascript" src="../nav/moo.fx.js"></script>
|
|
|
14 |
<script type="text/javascript" src="../nav/user_guide_menu.js"></script>
|
|
|
15 |
|
|
|
16 |
<meta http-equiv='expires' content='-1' />
|
|
|
17 |
<meta http-equiv= 'pragma' content='no-cache' />
|
|
|
18 |
<meta name='robots' content='all' />
|
|
|
19 |
<meta name='author' content='ExpressionEngine Dev Team' />
|
|
|
20 |
<meta name='description' content='CodeIgniter User Guide' />
|
|
|
21 |
|
|
|
22 |
</head>
|
|
|
23 |
<body>
|
|
|
24 |
|
|
|
25 |
<!-- START NAVIGATION -->
|
|
|
26 |
<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
|
|
|
27 |
<div id="nav2"><a name="top"></a><a href="javascript:void(0);" onclick="myHeight.toggle();"><img src="../images/nav_toggle_darker.jpg" width="154" height="43" border="0" title="Toggle Table of Contents" alt="Toggle Table of Contents" /></a></div>
|
|
|
28 |
<div id="masthead">
|
|
|
29 |
<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
|
|
|
30 |
<tr>
|
|
|
31 |
<td><h1>CodeIgniter User Guide Version 1.7.1</h1></td>
|
|
|
32 |
<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
|
|
|
33 |
</tr>
|
|
|
34 |
</table>
|
|
|
35 |
</div>
|
|
|
36 |
<!-- END NAVIGATION -->
|
|
|
37 |
|
|
|
38 |
|
|
|
39 |
<!-- START BREADCRUMB -->
|
|
|
40 |
<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
|
|
|
41 |
<tr>
|
|
|
42 |
<td id="breadcrumb">
|
|
|
43 |
<a href="http://codeigniter.com/">CodeIgniter Home</a> ›
|
|
|
44 |
<a href="../index.html">User Guide Home</a> ›
|
|
|
45 |
<a href="index.html">Database Library</a> ›
|
|
|
46 |
Configuration
|
|
|
47 |
</td>
|
|
|
48 |
<td id="searchbox"><form method="get" action="http://www.google.com/search"><input type="hidden" name="as_sitesearch" id="as_sitesearch" value="codeigniter.com/user_guide/" />Search User Guide <input type="text" class="input" style="width:200px;" name="q" id="q" size="31" maxlength="255" value="" /> <input type="submit" class="submit" name="sa" value="Go" /></form></td>
|
|
|
49 |
</tr>
|
|
|
50 |
</table>
|
|
|
51 |
<!-- END BREADCRUMB -->
|
|
|
52 |
|
|
|
53 |
|
|
|
54 |
<br clear="all" />
|
|
|
55 |
|
|
|
56 |
|
|
|
57 |
<!-- START CONTENT -->
|
|
|
58 |
<div id="content">
|
|
|
59 |
|
|
|
60 |
|
|
|
61 |
<h1>Database Configuration</h1>
|
|
|
62 |
|
|
|
63 |
<p>CodeIgniter has a config file that lets you store your database connection values (username, password, database name, etc.).
|
|
|
64 |
The config file is located at:</p>
|
|
|
65 |
|
|
|
66 |
<p><kbd>application/config/database.php</kbd></p>
|
|
|
67 |
|
|
|
68 |
<p>The config settings are stored in a multi-dimensional array with this prototype:</p>
|
|
|
69 |
|
|
|
70 |
<code>$db['default']['hostname'] = "localhost";<br />
|
|
|
71 |
$db['default']['username'] = "root";<br />
|
|
|
72 |
$db['default']['password'] = "";<br />
|
|
|
73 |
$db['default']['database'] = "database_name";<br />
|
|
|
74 |
$db['default']['dbdriver'] = "mysql";<br />
|
|
|
75 |
$db['default']['dbprefix'] = "";<br />
|
|
|
76 |
$db['default']['pconnect'] = TRUE;<br />
|
|
|
77 |
$db['default']['db_debug'] = FALSE;<br />
|
|
|
78 |
$db['default']['cache_on'] = FALSE;<br />
|
|
|
79 |
$db['default']['cachedir'] = "";<br />
|
|
|
80 |
$db['default']['char_set'] = "utf8";<br />
|
|
|
81 |
$db['default']['dbcollat'] = "utf8_general_ci";</code>
|
|
|
82 |
|
|
|
83 |
<p>The reason we use a multi-dimensional array rather than a more simple one is to permit you to optionally store
|
|
|
84 |
multiple sets of connection values. If, for example, you run multiple environments (development, production, test, etc.)
|
|
|
85 |
under a single installation, you can set up a connection group for each, then switch between groups as needed.
|
|
|
86 |
For example, to set up a "test" environment you would do this:</p>
|
|
|
87 |
|
|
|
88 |
<code>$db['test']['hostname'] = "localhost";<br />
|
|
|
89 |
$db['test']['username'] = "root";<br />
|
|
|
90 |
$db['test']['password'] = "";<br />
|
|
|
91 |
$db['test']['database'] = "database_name";<br />
|
|
|
92 |
$db['test']['dbdriver'] = "mysql";<br />
|
|
|
93 |
$db['test']['dbprefix'] = "";<br />
|
|
|
94 |
$db['test']['pconnect'] = TRUE;<br />
|
|
|
95 |
$db['test']['db_debug'] = FALSE;<br />
|
|
|
96 |
$db['test']['cache_on'] = FALSE;<br />
|
|
|
97 |
$db['test']['cachedir'] = "";<br />
|
|
|
98 |
$db['test']['char_set'] = "utf8";<br />
|
|
|
99 |
$db['test']['dbcollat'] = "utf8_general_ci";</code>
|
|
|
100 |
|
|
|
101 |
|
|
|
102 |
<p>Then, to globally tell the system to use that group you would set this variable located in the config file:</p>
|
|
|
103 |
|
|
|
104 |
<code>$active_group = "test";</code>
|
|
|
105 |
|
|
|
106 |
<p>Note: The name "test" is arbitrary. It can be anything you want. By default we've used the word "default"
|
|
|
107 |
for the primary connection, but it too can be renamed to something more relevant to your project.</p>
|
|
|
108 |
|
|
|
109 |
<h3>Active Record</h3>
|
|
|
110 |
|
|
|
111 |
<p>The <a href="active_record.html">Active Record Class</a> is globally enabled or disabled by setting the $active_record variable in the database configuration file to TRUE/FALSE (boolean). If you are not using the active record class, setting it to FALSE will utilize fewer resources when the database classes are initialized.</p>
|
|
|
112 |
|
|
|
113 |
<code>$active_record = TRUE;</code>
|
|
|
114 |
|
|
|
115 |
<p class="important"><strong>Note:</strong> that some CodeIgniter classes such as Sessions require Active Records be enabled to access certain functionality.</p>
|
|
|
116 |
|
|
|
117 |
<h3>Explanation of Values:</h3>
|
|
|
118 |
|
|
|
119 |
<ul>
|
|
|
120 |
<li><strong>hostname</strong> - The hostname of your database server. Often this is "localhost".</li>
|
|
|
121 |
<li><strong>username</strong> - The username used to connect to the database.</li>
|
|
|
122 |
<li><strong>password</strong> - The password used to connect to the database.</li>
|
|
|
123 |
<li><strong>database</strong> - The name of the database you want to connect to.</li>
|
|
|
124 |
<li><strong>dbdriver</strong> - The database type. ie: mysql, postgres, odbc, etc. Must be specified in lower case.</li>
|
|
|
125 |
<li><strong>dbprefix</strong> - An optional table prefix which will added to the table name when running <a href="active_record.html">Active Record</a> queries. This permits multiple CodeIgniter installations to share one database.</li>
|
|
|
126 |
<li><strong>pconnect</strong> - TRUE/FALSE (boolean) - Whether to use a persistent connection.</li>
|
|
|
127 |
<li><strong>db_debug</strong> - TRUE/FALSE (boolean) - Whether database errors should be displayed.</li>
|
|
|
128 |
<li><strong>cache_on</strong> - TRUE/FALSE (boolean) - Whether database query caching is enabled, see also <a href="caching.html">Database Caching Class</a>.</li>
|
|
|
129 |
<li><strong>cachedir</strong> - The absolute server path to your database query cache directory.</li>
|
|
|
130 |
<li><strong>char_set</strong> - The character set used in communicating with the database.</li>
|
|
|
131 |
<li><strong>dbcollat</strong> - The character collation used in communicating with the database.</li>
|
|
|
132 |
<li><strong>port</strong> - The database port number. Currently only used with the Postgres driver. To use this value you have to add a line to the database config array.<code>$db['default']['port'] = 5432;</code></li>
|
|
|
133 |
</ul>
|
|
|
134 |
|
|
|
135 |
<p class="important"><strong>Note:</strong> Depending on what database platform you are using (MySQL, Postgres, etc.)
|
|
|
136 |
not all values will be needed. For example, when using SQLite you will not need to supply a username or password, and
|
|
|
137 |
the database name will be the path to your database file. The information above assumes you are using MySQL.</p>
|
|
|
138 |
|
|
|
139 |
|
|
|
140 |
|
|
|
141 |
</div>
|
|
|
142 |
<!-- END CONTENT -->
|
|
|
143 |
|
|
|
144 |
|
|
|
145 |
<div id="footer">
|
|
|
146 |
<p>
|
|
|
147 |
Previous Topic: <a href="examples.html">Quick Start: Usage Examples</a>
|
|
|
148 |
·
|
|
|
149 |
<a href="#top">Top of Page</a> ·
|
|
|
150 |
<a href="../index.html">User Guide Home</a> ·
|
|
|
151 |
Next Topic: <a href="connecting.html">Connecting to your Database</a>
|
|
|
152 |
</p>
|
|
|
153 |
<p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006-2008 · <a href="http://ellislab.com/">Ellislab, Inc.</a></p>
|
|
|
154 |
</div>
|
|
|
155 |
|
|
|
156 |
</body>
|
|
|
157 |
</html>
|