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In PHP, you can use the mysqli_error() function to return the last error description of the recently called function. The syntax is "mysqli_error(connection);". The parameter connection specifies the MySQL connection to be used.
The operating environment of this article: Windows 7 system, PHP version 7.1, DELL G3 computer
How to obtain the php mysqli error message?
mysqli_error() function returns the last error description of the most recently called function.
Syntax
mysqli_error(connection);
Parameters
connection required. Specifies the MySQL connection to use.
Return value: Returns a string with an error description. Returns "" if no error occurred.
Example
Return the last error description of the recently called function:
<?php // 假定数据库用户名:root,密码:123456,数据库:RUNOOB $con=mysqli_connect("localhost","root","123456","RUNOOB"); if (mysqli_connect_errno($con)) { echo "连接 MySQL 失败: " . mysqli_connect_error(); } // 执行查询,检查错误 if (!mysqli_query($con,"INSERT INTO websites (name) VALUES ('菜鸟教程')")) { echo("错误描述: " . mysqli_error($con)); } mysqli_close($con); ?>
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