使用php远程连接到mysql服务器

Question

我可以通过 ssh 连接到 mysql 服务器。

# mysql -u username -h 185.2.3.80 -ppasword

输出是：

Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 280
Server version: 5.1.61 Source distribution

Copyright (c) 2000, 2011, Oracle and/or its affiliates. All rights reserved.

Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.

Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.

我想用php连接mysql服务器：

<?php
$servername = "185.2.3.80";
$username = "username";
$password = "password";

// Create connection
$conn = new mysqli($servername, $username, $password);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
} 
echo "Connected successfully";
?>

这是输出：

Could not connect: Can't connect to MySQL server on '185.2.3.80' (13)

我用 iptables 关闭防火墙并从 my.cnf 中删除 bind-address 和 skip-networking 。但无法连接 php 。

Answer 1

试试看

<?php
$servername = "185.2.3.80:<server Port>";
$username = "username";
$password = "password";

// Create connection
$conn = new mysqli($servername, $username, $password);

// Check connection
if ($conn->connect_error) {
    die("Connection failed: " . $conn->connect_error);
} 
echo "Connected successfully";
?>

在我的例子中写下你的服务器端口是 3306。 再做一件事，转到您的 Cpanel -> 远程 mysql，然后添加百分比通配符以允许在线访问您的数据库。

Answer 2

您忘记了数据库名称。

首先在变量中设置你的数据库名称

$databaseName = '/* The name of your database */';

试试这个：

$conn = new mysqli($servername, $username, $password, $databaseName);

参考documentation

Answer 3

我找到了解决方案.ssh 可以连接到 mysql 服务器，但 httpd 无法通过网络连接 mysql。我使 httpd 可以通过网络连接到 mysql 服务器：

 sudo setsebool -P httpd_can_network_connect=1