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
过程化风格
mysqli_connect_errno
(
) : int
Returns the error code from the last connection attempt.
返回值
An error code for the last connection attempt, if it failed. Zero means no error occurred.
范例
示例 #1 $mysqli->connect_errno example
面向对象风格
<?php
/* @ is used to suppress default error messages */
$mysqli = @new mysqli('localhost', 'fake_user', 'my_password', 'my_db');
if ($mysqli->connect_errno) {
/* Use your preferred error logging method here */
error_log('Connection error: ' . $mysqli->connect_errno);
}
过程化风格
<?php
/* @ is used to suppress default error messages */
$link = @mysqli_connect('localhost', 'fake_user', 'my_password', 'my_db');
if (!$link) {
/* Use your preferred error logging method here */
error_log('Connection error: ' . mysqli_connect_errno());
}
以上例程会输出:
Connection error: 1045
参见
- mysqli_connect() - 别名 mysqli::__construct
- mysqli_connect_error() - Returns a description of the last connection 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