Php/docs/mysqli.connect-errno

• PHP Manual
• MySQLi
• Returns the error code from last connect call

mysqli::$connect_errno

mysqli_connect_errno

(PHP 5, PHP 7)

mysqli::$connect_errno -- mysqli_connect_errno — Returns the error code from last connect call

说明

面向对象风格

int $mysqli->connect_errno;

过程化风格

mysqli_connect_errno ( ) : int

Returns the last error code number from the last call to mysqli_connect().

Note:

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.

范例

Example #1 $mysqli->connect_errno example

面向对象风格

<?php$mysqli = @new mysqli('localhost', 'fake_user', 'my_password', 'my_db');if ($mysqli->connect_errno) {    die('Connect Error: ' . $mysqli->connect_errno);}?>

过程化风格

<?php$link = @mysqli_connect('localhost', 'fake_user', 'my_password', 'my_db');if (!$link) {    die('Connect Error: ' . mysqli_connect_errno());}?>

以上例程会输出：

Connect Error: 1045

参见

• mysqli_connect() - 别名 mysqli::__construct
• mysqli_connect_error() - Returns a string description of the last connect error
• mysqli_errno() - 返回最近函数调用的错误代码
• mysqli_error() - Returns a string description of the last error
• mysqli_sqlstate() - 返回上一次 SQL 操作的 SQLSTATE 错误信息