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mysqli_connect_errno

(PHP 5)

mysqli_connect_errno -- Returns the error code from last connect call

Description

int mysqli_connect_errno ( void )

The mysqli_connect_errno() function will return the last error code number for last call to mysqli_connect(). If no errors have occured, this function will return zero.

注: Client error message numbers are listed in the MySQL errmsg.h header file, server error message numbers are listed in mysqld_error.h. In the MySQL source distribution you can find a complete list of error messages and error numbers in the file Docs/mysqld_error.txt.

返回值

An error code value for the last call to mysqli_connect(), if it failed. zero means no error occurred.

参见

mysqli_connect(), mysqli_connect_error(), mysqli_errno(), mysqli_error() 和 mysqli_sqlstate().

例

例子 1. mysqli_connect_errno sample

<?php

$link = @mysqli_connect("localhost", "nonexisting_user", "");

if (!$link) {
    printf("Can't connect to localhost. Errorcode: %d\n", mysqli_connect_errno());
}
?>

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