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PHP Functions
Function: mysql_errno (PHP 3, PHP 4, PHP 5) mysql_errno -- Returns the numerical value of the error message from previous MySQL operationDescriptionint 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 ValuesReturns 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 Related Function(s) |