mysqli::$connect_error
mysqli_connect_error
(PHP 5, PHP 7, PHP 8)
mysqli::$connect_error -- mysqli_connect_error — Returns a description of the last connection error
说明
面向对象风格
过程化风格
Returns the error message from the last connection attempt.
参数
此函数没有参数。
返回值
A string that describes the error. null is returned if no error occurred.
示例
示例 #1 $mysqli->connect_error example
面向对象风格
<?php
mysqli_report(MYSQLI_REPORT_OFF);
/* @ is used to suppress warnings */
$mysqli = @new mysqli('localhost', 'fake_user', 'wrong_password', 'does_not_exist');
if ($mysqli->connect_error) {
/* Use your preferred error logging method here */
error_log('Connection error: ' . $mysqli->connect_error);
}过程化风格
<?php
mysqli_report(MYSQLI_REPORT_OFF);
/* @ is used to suppress warnings */
$link = @mysqli_connect('localhost', 'fake_user', 'wrong_password', 'does_not_exist');
if (!$link) {
/* Use your preferred error logging method here */
error_log('Connection error: ' . mysqli_connect_error());
}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 MySQL 操作的 SQLSTATE 错误
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