目录

PHP mysqli errno() 函数

❮ PHP MySQLi 参考

示例 - 面向对象风格

返回最近函数调用的最后一个错误代码(如果有):

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

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

// Perform a query, check for error
if (!$mysqli -> query("INSERT INTO Persons (FirstName) VALUES ('Glenn')")) {
  echo("Errorcode: " . $mysqli -> errno);
}

$mysqli -> close();
?>

查看底部的程序样式示例。


定义和用法

errno / mysqli_errno() 函数返回最近函数调用的最后一个错误代码(如果有)。


语法

面向对象风格:

$mysqli -> errno

程序风格:

mysqli_errno( connection)

参数值

Parameter Description
connection Required. Specifies the MySQL connection to use

技术细节

返回值: 返回错误代码值。如果没有发生错误则为零
PHP 版本: 5+

示例 - 程序风格

返回最近函数调用的最后一个错误代码(如果有):

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

if (mysqli_connect_errno()) {
  echo "Failed to connect to MySQL: " . mysqli_connect_error();
  exit();
}

// Perform a query, check for error
if (!mysqli_query($con,"INSERT INTO Persons (FirstName) VALUES ('Glenn')")) {
  echo("Errorcode: " . mysqli_errno($con));


mysqli_close($con);
?>


❮ PHP MySQLi 参考