diff options
Diffstat (limited to 'user_guide/database/connecting.html')
| -rw-r--r-- | user_guide/database/connecting.html | 360 |
1 files changed, 180 insertions, 180 deletions
diff --git a/user_guide/database/connecting.html b/user_guide/database/connecting.html index 8ece6dcef..90f901104 100644 --- a/user_guide/database/connecting.html +++ b/user_guide/database/connecting.html @@ -1,181 +1,181 @@ -<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
-<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
-<head>
-
-<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
-<title>Connecting to your Database : CodeIgniter User Guide</title>
-
-<style type='text/css' media='all'>@import url('../userguide.css');</style>
-<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' />
-
-<script type="text/javascript" src="../nav/nav.js"></script>
-<script type="text/javascript" src="../nav/prototype.lite.js"></script>
-<script type="text/javascript" src="../nav/moo.fx.js"></script>
-<script type="text/javascript" src="../nav/user_guide_menu.js"></script>
-
-<meta http-equiv='expires' content='-1' />
-<meta http-equiv= 'pragma' content='no-cache' />
-<meta name='robots' content='all' />
-<meta name='author' content='ExpressionEngine Dev Team' />
-<meta name='description' content='CodeIgniter User Guide' />
-
-</head>
-<body>
-
-<!-- START NAVIGATION -->
-<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div>
-<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>
-<div id="masthead">
-<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
-<tr>
-<td><h1>CodeIgniter User Guide Version 1.7</h1></td>
-<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td>
-</tr>
-</table>
-</div>
-<!-- END NAVIGATION -->
-
-
-<!-- START BREADCRUMB -->
-<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
-<tr>
-<td id="breadcrumb">
-<a href="http://codeigniter.com/">CodeIgniter Home</a> ›
-<a href="../index.html">User Guide Home</a> ›
-<a href="index.html">Database Library</a> ›
-Connecting
-</td>
-<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>
-</tr>
-</table>
-<!-- END BREADCRUMB -->
-
-
-<br clear="all" />
-
-
-<!-- START CONTENT -->
-<div id="content">
-
-
-<h1>Connecting to your Database</h1>
-
-<p>There are two ways to connect to a database:</p>
-
-<h2>Automatically Connecting</h2>
-
-<p>The "auto connect" feature will load and instantiate the database class with every page load.
-To enable "auto connecting", add the word <var>database</var> to the library array, as indicated in the following file:</p>
-
-<p><kbd>application/config/autoload.php</kbd></p>
-
-<h2>Manually Connecting</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>
-
-<code>$this->load->database();</code>
-
-<p class="important">If the above function does <strong>not</strong> contain any information in the first parameter it will connect
-to the group specified in your database config file. For most people, this is the preferred method of use.</p>
-
-<h3>Available Parameters</h3>
-
-<ol>
- <li>The database connection values, passed either as an array or a DSN string.</li>
- <li>TRUE/FALSE (boolean). Whether to return the connection ID (see Connecting to Multiple Databases below).</li>
- <li>TRUE/FALSE (boolean). Whether to enable the Active Record class. Set to FALSE by default.</li>
-</ol>
-
-
-<h3>Manuallly Connecting to a Database</h3>
-
-<p>The first parameter of this function can <strong>optionally</strong> be used to specify a particular database group
-from your config file, or you can even submit connection values for a database that is not specified in your config file.
-Examples:</p>
-
-<p>To choose a specific group from your config file you can do this:</p>
-
-<code>$this->load->database('<samp>group_name</samp>');</code>
-
-<p>Where <samp>group_name</samp> 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>
-
-<code>$config['hostname'] = "localhost";<br />
-$config['username'] = "myusername";<br />
-$config['password'] = "mypassword";<br />
-$config['database'] = "mydatabase";<br />
-$config['dbdriver'] = "mysql";<br />
-$config['dbprefix'] = "";<br />
-$config['pconnect'] = FALSE;<br />
-$config['db_debug'] = TRUE;<br />
-$config['cache_on'] = FALSE;<br />
-$config['cachedir'] = "";<br />
-$config['char_set'] = "utf8";<br />
-$config['dbcollat'] = "utf8_general_ci";<br />
-<br />
-$this->load->database(<samp>$config</samp>);</code>
-
-<p>For information on each of these values please see the <a href="configuration.html">configuration page</a>.</p>
-
-<p>Or you can submit your database values as a Data Source Name. DSNs must have this prototype:</p>
-
-<code>$dsn = 'dbdriver://username:password@hostname/database';<br />
-<br />
-$this->load->database(<samp>$dsn</samp>);</code>
-
-<p>To override default config values when connecting with a DSN string, add the config variables as a query string.</p>
-
-<code>$dsn = 'dbdriver://username:password@hostname/database?char_set=utf8&dbcollat=utf8_general_ci&cache_on=true&cachedir=/path/to/cache';<br />
-<br />
-$this->load->database(<samp>$dsn</samp>);</code>
-
-<h2>Connecting to Multiple Databases</h2>
-
-<p>If you need to connect to more than one database simultaneously you can do so as follows:</p>
-
-
-<code>$DB1 = $this->load->database('group_one', TRUE);<br />
-$DB2 = $this->load->database('group_two', TRUE);
-</code>
-
-<p>Note: Change the words "group_one" and "group_two" to the specific group names you are connecting to (or
-you can pass the connection values as indicated above).</p>
-
-<p>By setting the second parameter to TRUE (boolean) the function will return the database object.</p>
-
-<div class="important">
-<p>When you connect this way, you will use your object name to issue commands rather than the syntax used throughout this guide. In other words, rather than issuing commands with:</p>
-
-<p>$this->db->query();<br />$this->db->result();<br /> etc...</p>
-
-<p>You will instead use:</p>
-
-<p>$DB1->query();<br />$DB1->result();<br /> etc...</p>
-
-</div>
-
-
-
-
-
-</div>
-<!-- END CONTENT -->
-
-
-<div id="footer">
-<p>
-Previous Topic: <a href="configuration.html">Database Configuration</a>
- ·
-<a href="#top">Top of Page</a> ·
-<a href="../index.html">User Guide Home</a> ·
-Next Topic: <a href="queries.html">Queries</a>
-</p>
-<p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006-2008 · <a href="http://ellislab.com/">Ellislab, Inc.</a></p>
-</div>
-
-</body>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> +<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> +<head> + +<meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> +<title>Connecting to your Database : CodeIgniter User Guide</title> + +<style type='text/css' media='all'>@import url('../userguide.css');</style> +<link rel='stylesheet' type='text/css' media='all' href='../userguide.css' /> + +<script type="text/javascript" src="../nav/nav.js"></script> +<script type="text/javascript" src="../nav/prototype.lite.js"></script> +<script type="text/javascript" src="../nav/moo.fx.js"></script> +<script type="text/javascript" src="../nav/user_guide_menu.js"></script> + +<meta http-equiv='expires' content='-1' /> +<meta http-equiv= 'pragma' content='no-cache' /> +<meta name='robots' content='all' /> +<meta name='author' content='ExpressionEngine Dev Team' /> +<meta name='description' content='CodeIgniter User Guide' /> + +</head> +<body> + +<!-- START NAVIGATION --> +<div id="nav"><div id="nav_inner"><script type="text/javascript">create_menu('../');</script></div></div> +<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> +<div id="masthead"> +<table cellpadding="0" cellspacing="0" border="0" style="width:100%"> +<tr> +<td><h1>CodeIgniter User Guide Version 1.7</h1></td> +<td id="breadcrumb_right"><a href="../toc.html">Table of Contents Page</a></td> +</tr> +</table> +</div> +<!-- END NAVIGATION --> + + +<!-- START BREADCRUMB --> +<table cellpadding="0" cellspacing="0" border="0" style="width:100%"> +<tr> +<td id="breadcrumb"> +<a href="http://codeigniter.com/">CodeIgniter Home</a> › +<a href="../index.html">User Guide Home</a> › +<a href="index.html">Database Library</a> › +Connecting +</td> +<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> +</tr> +</table> +<!-- END BREADCRUMB --> + + +<br clear="all" /> + + +<!-- START CONTENT --> +<div id="content"> + + +<h1>Connecting to your Database</h1> + +<p>There are two ways to connect to a database:</p> + +<h2>Automatically Connecting</h2> + +<p>The "auto connect" feature will load and instantiate the database class with every page load. +To enable "auto connecting", add the word <var>database</var> to the library array, as indicated in the following file:</p> + +<p><kbd>application/config/autoload.php</kbd></p> + +<h2>Manually Connecting</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> + +<code>$this->load->database();</code> + +<p class="important">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> + +<h3>Available Parameters</h3> + +<ol> + <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 Active Record class. Set to FALSE by default.</li> +</ol> + + +<h3>Manuallly Connecting to a Database</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> + +<code>$this->load->database('<samp>group_name</samp>');</code> + +<p>Where <samp>group_name</samp> is the name of the connection group from your config file.</p> + + +<p>To connect manually to a desired database you can pass an array of values:</p> + +<code>$config['hostname'] = "localhost";<br /> +$config['username'] = "myusername";<br /> +$config['password'] = "mypassword";<br /> +$config['database'] = "mydatabase";<br /> +$config['dbdriver'] = "mysql";<br /> +$config['dbprefix'] = "";<br /> +$config['pconnect'] = FALSE;<br /> +$config['db_debug'] = TRUE;<br /> +$config['cache_on'] = FALSE;<br /> +$config['cachedir'] = "";<br /> +$config['char_set'] = "utf8";<br /> +$config['dbcollat'] = "utf8_general_ci";<br /> +<br /> +$this->load->database(<samp>$config</samp>);</code> + +<p>For information on each of these values please see the <a href="configuration.html">configuration page</a>.</p> + +<p>Or you can submit your database values as a Data Source Name. DSNs must have this prototype:</p> + +<code>$dsn = 'dbdriver://username:password@hostname/database';<br /> +<br /> +$this->load->database(<samp>$dsn</samp>);</code> + +<p>To override default config values when connecting with a DSN string, add the config variables as a query string.</p> + +<code>$dsn = 'dbdriver://username:password@hostname/database?char_set=utf8&dbcollat=utf8_general_ci&cache_on=true&cachedir=/path/to/cache';<br /> +<br /> +$this->load->database(<samp>$dsn</samp>);</code> + +<h2>Connecting to Multiple Databases</h2> + +<p>If you need to connect to more than one database simultaneously you can do so as follows:</p> + + +<code>$DB1 = $this->load->database('group_one', TRUE);<br /> +$DB2 = $this->load->database('group_two', TRUE); +</code> + +<p>Note: Change the words "group_one" and "group_two" to the specific group names you are connecting to (or +you can pass the connection values as indicated above).</p> + +<p>By setting the second parameter to TRUE (boolean) the function will return the database object.</p> + +<div class="important"> +<p>When you connect this way, you will use your object name to issue commands rather than the syntax used throughout this guide. In other words, rather than issuing commands with:</p> + +<p>$this->db->query();<br />$this->db->result();<br /> etc...</p> + +<p>You will instead use:</p> + +<p>$DB1->query();<br />$DB1->result();<br /> etc...</p> + +</div> + + + + + +</div> +<!-- END CONTENT --> + + +<div id="footer"> +<p> +Previous Topic: <a href="configuration.html">Database Configuration</a> + · +<a href="#top">Top of Page</a> · +<a href="../index.html">User Guide Home</a> · +Next Topic: <a href="queries.html">Queries</a> +</p> +<p><a href="http://codeigniter.com">CodeIgniter</a> · Copyright © 2006-2008 · <a href="http://ellislab.com/">Ellislab, Inc.</a></p> +</div> + +</body> </html>
\ No newline at end of file |