Php/func mysqli connect error

来自菜鸟教程
跳转至:导航、​搜索

PHP mysqli connect_error()函数

MySQL PHP MySQLi参考

示例-面向对象的样式

返回上一个连接错误的错误描述(如果有):

<?php

$mysqli = new mysqli("localhost","my_user","my_password","my_db");


// Check connection
if ($mysqli -> connect_errno) {

  echo "Failed to connect to MySQL: " . 
  $mysqli -> connect_error;
  
  exit();

  }
?>



在底部查看程序样式的示例。

定义和用法

connect_error / mysqli_connect_error()函数返回上次连接错误(如果有)的错误描述。

句法

面向对象的样式:

$mysqli -> connect_error

程序风格:

mysqli_connect_error();

技术细节

返回值: 返回描述错误的字符串。如果未发生错误,则为NULL
PHP版本: 5+

示例-程序风格

返回上一个连接错误的错误描述(如果有):

<?php

$con = mysqli_connect("localhost","my_user","my_password","my_db");


// Check connection

 if (mysqli_connect_errno()) {

  echo "Failed to connect to MySQL: " . mysqli_connect_error();

    
  exit();
}

?>



MySQL PHP MySQLi参考