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| author | admin <devnull@localhost> | 2006-09-26 01:26:03 +0200 |
|---|---|---|
| committer | admin <devnull@localhost> | 2006-09-26 01:26:03 +0200 |
| commit | 3b60ae4ea69a5cfda4561dafd502f8dcc742222e (patch) | |
| tree | 7e064acc315bfe98115f27a2ee3c49686cd4aaf2 /user_guide/database/utilities.html | |
| parent | ab4f61bacfa022c0c7238e9661ad9cb2ac440d95 (diff) | |
Diffstat (limited to 'user_guide/database/utilities.html')
| -rw-r--r-- | user_guide/database/utilities.html | 199 |
1 files changed, 199 insertions, 0 deletions
diff --git a/user_guide/database/utilities.html b/user_guide/database/utilities.html new file mode 100644 index 000000000..70d6664d9 --- /dev/null +++ b/user_guide/database/utilities.html @@ -0,0 +1,199 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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+<div id="masthead">
+<table cellpadding="0" cellspacing="0" border="0" style="width:100%">
+<tr>
+<td><h1>Code Igniter User Guide Version 1.4.1</h1></td>
+<td id="breadcrumb_right"><a href="../toc.html">Full Table of Contents</a></td>
+</tr>
+</table>
+</div>
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+<a href="http://www.codeigniter.com/">Code Igniter Home</a> ›
+<a href="../index.html">User Guide Home</a> ›
+<a href="index.html">Database Library</a> ›
+Database Utilities Class
+</td>
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+<!-- START CONTENT -->
+<div id="content">
+
+<h1>Database Utilities Class</h1>
+
+<p>The Database Utilities Class contains functions that help you manage your database.</p>
+
+<p class="important"><strong>Important:</strong> This class must be initialized independently since it is a separate class from the main Database class.
+More info below...</p>
+
+
+<h2>Initializing the Utilities Class</h2>
+
+<p>To initialize this class please use the following code:</p>
+
+<code>$this->load->dbutil()</code>
+
+<p>You can also autoload this class from within your <dfn>config/autoload.php</dfn> file by specifying <kbd>dbutil</kbd> in the <samp>$autoload['libraries']</samp> array.</p>
+
+<p>Once initialized you will access the functions using the <dfn>$this->dbutil</dfn> object:</p>
+
+<code>$this->dbutil->some_function()</code>
+
+
+
+<h2>$this->dbutil->create_database('db_name')</h2>
+
+<p>Permits you to create a database using the name specified in the first parameter. Returns TRUE/FALSE based on success or failure:</p>
+
+<code>if ($this->dbutil->create_database('my_db'))<br />
+{<br />
+ echo 'Database created!';<br />
+}</code>
+
+
+<h2>$this->dbutil->drop_database('table_name')</h2>
+
+<p>Permits you to drop a database using the table name specified in the first parameter. Returns TRUE/FALSE based on success or failure:</p>
+
+<code>if ($this->dbutil->drop_database('my_db'))<br />
+{<br />
+ echo 'Database deleted!';<br />
+}</code>
+
+
+<h2>$this->dbutil->list_databases()</h2>
+
+<p>Returns an array of database names:</p>
+
+
+<code>
+$dbs = $this->dbutil->list_databases();<br />
+<br />
+foreach($dbs as $db)<br />
+{<br />
+ echo $db;<br />
+}</code>
+
+
+
+<h2>$this->dbutil->list_tables();</h2>
+
+<p>Returns an array containing the names of all the tables in the database you are currently connected to. Example:</p>
+
+<code>$tables = $this->dbutil->list_tables()<br />
+<br />
+foreach ($tables as $table)<br />
+{<br />
+ echo $table;<br />
+}
+</code>
+
+
+<h2>$this->dbutil->table_exists();</h2>
+
+<p>Sometimes it's helpful to know whether a particular table exists before running an operation on it.
+Returns a boolean TRUE/FALSE. Usage example:</p>
+
+<code>
+if ($this->dbutil->table_exists('table_name'))<br />
+{<br />
+ // some code...<br />
+}
+</code>
+
+<p>Note: Replace <em>table_name</em> with the name of the table you are looking for.</p>
+
+
+<h2>$this->dbutil->optimize_table('table_name');</h2>
+
+<p>Permits you to optimize a table using the table name specified in the first parameter. Returns TRUE/FALSE based on success or failure:</p>
+
+<code>
+if ($this->dbutil->optimize_table('table_name'))<br />
+{<br />
+ echo 'Success!'<br />
+}
+</code>
+
+<p><strong>Note:</strong> Not all database platforms support table optimization.</p>
+
+
+<h2>$this->dbutil->repair_table('table_name');</h2>
+
+<p>Permits you to repair a table using the table name specified in the first parameter. Returns TRUE/FALSE based on success or failure:</p>
+
+<code>
+if ($this->dbutil->optimize_table('table_name'))<br />
+{<br />
+ echo 'Success!'<br />
+}
+</code>
+
+<p><strong>Note:</strong> Not all database platforms support table repairs.</p>
+
+
+
+
+
+
+
+</div>
+<!-- END CONTENT -->
+
+
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+<p>
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+ ·
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