Php/docs/mysqli.error
mysqli::$error
mysqli_error
(PHP 5, PHP 7)
mysqli::$error -- mysqli_error — Returns a string description of the last error
说明
面向对象风格
string $mysqli->error;
过程化风格
mysqli_error
( mysqli $link
) : string
Returns the last error message for the most recent MySQLi function call that can succeed or fail.
返回值
A string that describes the error. An empty string if no error occurred.
范例
Example #1 $mysqli->error example
面向对象风格
<?php$mysqli = new mysqli("localhost", "my_user", "my_password", "world");/* check connection */if ($mysqli->connect_errno) { printf("Connect failed: %s\n", $mysqli->connect_error); exit();}if (!$mysqli->query("SET a=1")) { printf("Error message: %s\n", $mysqli->error);}/* close connection */$mysqli->close();?>
过程化风格
<?php$link = mysqli_connect("localhost", "my_user", "my_password", "world");/* check connection */if (mysqli_connect_errno()) { printf("Connect failed: %s\n", mysqli_connect_error()); exit();}if (!mysqli_query($link, "SET a=1")) { printf("Error message: %s\n", mysqli_error($link));}/* close connection */mysqli_close($link);?>
以上例程会输出：
Error message: Unknown system variable 'a'
参见
- mysqli_connect_errno() - Returns the error code from last connect call
- 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_sqlstate() - 返回上一次 SQL 操作的 SQLSTATE 错误信息
