PHP mysqli_connect_errno()Function

PHP MySQLi 参考手册PHP MySQLi Reference Manual

Examples

Returns the error code of the last connection error:

<?php $con=mysqli_connect("localhost","wrong_user","my_password","my_db"); //Check whether the connection is successful if (!$con) { die("Connection failed:" . mysqli_connect_errno()); } ?>

Definition and Usage

The mysqli_connect_errno() function returns the error code of the last connection error.

Syntax

mysqli_connect_errno();

Technical Details

Return value: Returns the error code value, or 0 if no error occurs.
PHP Version: 5+

PHP MySQLi 参考手册PHP MySQLi Reference Manual Other Extensions