mysql_errno

Description

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

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.

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 would produce the following output: 1049: Unknown database 'nonexistentdb' 1146: Table 'kossu.nonexistenttable' doesn't exist

See also mysql_error() and MySQL error codes.