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diff --git a/user_guide/database/call_function.html b/user_guide/database/call_function.html new file mode 100644 index 000000000..e5584e9ef --- /dev/null +++ b/user_guide/database/call_function.html @@ -0,0 +1,123 @@ +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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+<td><h1>Code Igniter User Guide Version 1.4.1</h1></td>
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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> ›
+Custom Function Calls
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+<h1>Custom Function Calls</h1>
+
+<h2>$this->db->call_function();</h2>
+
+<p>This function enables you to call PHP database functions that are not natively included in Code Igniter, in a platform independent manner.
+For example, lets say you want to call the <dfn>mysql_get_client_info()</dfn> function, which is <strong>not</strong> natively supported
+by Code Igniter. You could do so like this:
+</p>
+
+<code>$this->db->call_function('<var>get_client_info</var>');</code>
+
+<p>You must supply the name of the function, <strong>without</strong> the <var>mysql_</var> prefix, in the first parameter. The prefix is added
+automatically based on which database driver is currently being used. This permits you to run the same function on different database platforms.
+Obviously not all function calls are identical between platforms, so there are limits to how useful this function can be in terms of portability.</p>
+
+<p>Any parameters needed by the function you are calling will be added to the second parameter.</p>
+
+<code>$this->db->call_function('<var>some_function</var>', $param1, $param2, etc..);</code>
+
+
+<p>Often, you will either need to supply a database connection ID or a database result ID. The connection ID can be accessed using:</p>
+
+<code>$this->db->conn_id;</code>
+
+<p>The result ID can be accessed from within your result object, like this:</p>
+
+<code>$query = $this->db->query("SOME QUERY");<br />
+<br />
+<var>$query->result_id;</var></code>
+
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