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Derek Jones | 733310d | 2009-02-11 01:13:43 +0000 | [diff] [blame^] | 31 | <td><h1>CodeIgniter User Guide Version 1.7.1</h1></td> |
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| 60 | <h1>Custom Function Calls</h1> |
| 61 | |
| 62 | <h2>$this->db->call_function();</h2> |
| 63 | |
| 64 | <p>This function enables you to call PHP database functions that are not natively included in CodeIgniter, in a platform independent manner. |
| 65 | For example, lets say you want to call the <dfn>mysql_get_client_info()</dfn> function, which is <strong>not</strong> natively supported |
| 66 | by CodeIgniter. You could do so like this: |
| 67 | </p> |
| 68 | |
| 69 | <code>$this->db->call_function('<var>get_client_info</var>');</code> |
| 70 | |
| 71 | <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 |
| 72 | automatically based on which database driver is currently being used. This permits you to run the same function on different database platforms. |
| 73 | 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> |
| 74 | |
| 75 | <p>Any parameters needed by the function you are calling will be added to the second parameter.</p> |
| 76 | |
| 77 | <code>$this->db->call_function('<var>some_function</var>', $param1, $param2, etc..);</code> |
| 78 | |
| 79 | |
| 80 | <p>Often, you will either need to supply a database connection ID or a database result ID. The connection ID can be accessed using:</p> |
| 81 | |
| 82 | <code>$this->db->conn_id;</code> |
| 83 | |
| 84 | <p>The result ID can be accessed from within your result object, like this:</p> |
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| 86 | <code>$query = $this->db->query("SOME QUERY");<br /> |
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| 88 | <var>$query->result_id;</var></code> |
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admin | fb28bb8 | 2006-09-24 17:59:33 +0000 | [diff] [blame] | 118 | </html> |