PHP 连接失败:SQLSTATE[HY000] [2002] 连接被拒绝 [英] PHP Connection failed: SQLSTATE[HY000] [2002] Connection refused

问题描述

我正在尝试使用 PHP 连接来连接 phpmyadmin 上的 MySQL 数据库.连接没有什么特别的，只是想看看连接是否成功.我使用 MAMP 来托管数据库，我尝试使用的连接是这样的:

I am trying to use a PHP connection to connect MySQL Database which is on phpmyadmin. Nothing fancy about the connection just trying to see whether the connection is successful or not. I am using MAMP to host the database, the connection I am trying to use is this:

<?php
$servername = "127.0.0.1";
$username = "root";
$password = "root";

try {
    $conn = new PDO("mysql:host=$servername;dbname=AppDatabase", $username, $password);
    // set the PDO error mode to exception
    $conn->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
    echo "Connected successfully"; 
}
catch(PDOException $e)
{
    echo "Connection failed: " . $e->getMessage();
}
?>

我一直在使用邮递员来测试连接是否正常工作，但我一直收到此错误消息:

I have been using postman to test to see if the connection is working, but I keep receiving this error message:

连接失败:SQLSTATE[HY000] [2002] 连接被拒绝

Connection failed: SQLSTATE[HY000] [2002] Connection refused

在我收到以下错误消息之前:

Before I was receiving an error message of:

连接失败:SQLSTATE[HY000] [2002] 没有那个文件或目录

Connection failed: SQLSTATE[HY000] [2002] No such file or directory

这是因为我已将服务器名称设置为 localhost，通过将其更改为 IP 地址，它拒绝了我的连接，我不知道出了什么问题.

This was because I had set the servername to localhost, through changing this to the IP address it has given me connection refused and I have no idea what is wrong.

对此的任何帮助将不胜感激.

Any help regarding this would be appreciated.

推荐答案

我找到了连接不工作的原因，是因为连接试图连接到端口 8888，而它需要连接到端口 8889.

I found the reason why the connection was not working, it was because the connection was trying to connect to port 8888, when it needed to connect to port 8889.

$conn = new PDO("mysql:host=$servername;port=8889;dbname=AppDatabase", $username, $password); 

这解决了问题，尽管将服务器名称更改为 localhost 仍然会出现错误.

This fixed the problem, although changing the server name to localhost still gives the error.

连接失败:SQLSTATE[HY000] [2002] 没有那个文件或目录

Connection failed: SQLSTATE[HY000] [2002] No such file or directory

但是当服务器名称输入IP地址时它连接成功.

But it connects successfully when the IP address is entered for the server name.

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