Php/docs/mysqli.connect-error
mysqli::$connect_error
mysqli_connect_error
(PHP 5, PHP 7)
mysqli::$connect_error -- mysqli_connect_error — Returns a string description of the last connect error
说明
面向对象风格
string $mysqli->connect_error;
过程化风格
mysqli_connect_error ( ) : string
Returns the last error message string from the last call to mysqli_connect().
返回值
A string that describes the error. null is returned if no error occurred.
范例
Example #1 $mysqli->connect_error example
面向对象风格
<?php$mysqli = @new mysqli('localhost', 'fake_user', 'my_password', 'my_db');// Works as of PHP 5.2.9 and 5.3.0.if ($mysqli->connect_error) { die('Connect Error: ' . $mysqli->connect_error);}?>
过程化风格
<?php$link = @mysqli_connect('localhost', 'fake_user', 'my_password', 'my_db');if (!$link) { die('Connect Error: ' . mysqli_connect_error());}?>
以上例程会输出：
Connect Error: Access denied for user 'fake_user'@'localhost' (using password: YES)
注释
Warning The mysqli->connect_error property only works properly as of PHP versions 5.2.9 and 5.3.0. Use the mysqli_connect_error() function if compatibility with earlier PHP versions is required.
参见
- mysqli_connect() - 别名 mysqli::__construct
- mysqli_connect_errno() - Returns the error code from last connect call
- 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
