mysql_errno

(PHP 3, PHP 4, PHP 5)

mysql_errno -- Returns the numerical value of the error message from previous MySQL operation

Description

int mysql_errno ( [resource link_identifier] )

Returns the error number from the last MySQL function.

Errors coming back from the MySQL database backend no longer issue warnings. Instead, use mysql_errno() to retrieve the error code. Note that this function only returns the error code from the most recently executed MySQL function (not including mysql_error() and mysql_errno()), so if you want to use it, make sure you check the value before calling another MySQL function.

Parameters

link_identifier: The MySQL connection. If the link identifier is not specified, the last link opened by mysql_connect() is assumed. If no such link is found, it will try to create one as if mysql_connect() was called with no arguments. If by chance no connection is found or established, an E_WARNING level warning is generated.

Return Values

Returns the error number from the last MySQL function, or 0 (zero) if no error occurred.

Examples

Example 1. mysql_errno() example
<?php $link = mysql_connect("localhost", "mysql_user", "mysql_password"); if (!mysql_select_db("nonexistentdb", $link)) { echo mysql_errno($link) . ": " . mysql_error($link). "\n"; } mysql_select_db("kossu", $link); if (!mysql_query("SELECT * FROM nonexistenttable", $link)) { echo mysql_errno($link) . ": " . mysql_error($link) . "\n"; } ?>
The above example will output something similar to:
1049: Unknown database 'nonexistentdb' 1146: Table 'kossu.nonexistenttable' doesn't exist

mysql_errno

Description

Parameters

Return Values

Examples

See Also