Php/docs/function.mysql-errno
mysql_errno
(PHP 4, PHP 5)
mysql_errno — Returns the numerical value of the error message from previous MySQL operation
Warning This extension was deprecated in PHP 5.5.0, and it was removed in PHP 7.0.0. Instead, the MySQLi or PDO_MySQL extension should be used. See also MySQL: choosing an API guide and related FAQ for more information. Alternatives to this function include:
Description
mysql_errno
([ resource $link_identifier = NULL
] ) : int
Returns the error number from the last MySQL function.
Errors coming back from the MySQL database backend no longer issue warnings. Instead, use mysql_errno() to retrieve the error code. Note that this function only returns the error code from the most recently executed MySQL function (not including mysql_error() and mysql_errno()), so if you want to use it, make sure you check the value before calling another MySQL function.
Parameters
link_identifier- The MySQL connection. If the link identifier is not specified, the last link opened by mysql_connect() is assumed. If no such link is found, it will try to create one as if mysql_connect() had been called with no arguments. If no connection is found or established, an
E_WARNINGlevel error is generated.
Return Values
Returns the error number from the last MySQL function, or
0 (zero) if no error occurred.
Examples
Example #1 mysql_errno() example
<?php$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
See Also
- mysql_error() - Returns the text of the error message from previous MySQL operation
- » MySQL error codes
