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.
参数
此函数没有参数。
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
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