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www.giggi.me / code-igniter-v3-giggi / c644128fdd49a47d791240e0e38b54cd22412bc5 / . / user_guide / database / call_function.html
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Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]36<td><h1>CodeIgniter User Guide Version 1.5.3</h1></td>
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50<a href="index.html">Database Library</a> &nbsp;&#8250;&nbsp;
51Custom Function Calls
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65<h1>Custom Function Calls</h1>
66
67<h2>$this->db->call_function();</h2>
68
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]69<p>This function enables you to call PHP database functions that are not natively included in CodeIgniter, in a platform independent manner.
admine334c472006-10-21 19:44:22 +0000[diff] [blame]70For example, lets say you want to call the <dfn>mysql_get_client_info()</dfn> function, which is <strong>not</strong> natively supported
Derek Allardd2df9bc2007-04-15 17:41:17 +0000[diff] [blame]71by CodeIgniter. You could do so like this:
adminfb28bb82006-09-24 17:59:33 +0000[diff] [blame]72</p>
73
74<code>$this->db->call_function('<var>get_client_info</var>');</code>
75
76<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
admine334c472006-10-21 19:44:22 +0000[diff] [blame]77automatically based on which database driver is currently being used. This permits you to run the same function on different database platforms.
adminfb28bb82006-09-24 17:59:33 +0000[diff] [blame]78Obviously not all function calls are identical between platforms, so there are limits to how useful this function can be in terms of portability.</p>
79
80<p>Any parameters needed by the function you are calling will be added to the second parameter.</p>
81
82<code>$this->db->call_function('<var>some_function</var>', $param1, $param2, etc..);</code>
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85<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>
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89<p>The result ID can be accessed from within your result object, like this:</p>
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