PHP连接到外部MySQL数据库

Question

即时通讯试图连接到我的外部sql数据库，但我不断收到此错误：

mysql_connect(): A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond. in C:\wamp\www\zconnect.php on line 10
Unable to connect to database! Please try again later.

这是PHP脚本：

<?php
$hostname='111.11.111.11'; #this is not my real ip address
$username='root';
$password='password';
$dbname='database';
$usertable='users';
$yourfield = 'admin';

mysql_connect($hostname,$username, $password) OR DIE ('Unable to connect to database! Please try again later.');
mysql_select_db($dbname);

$query = 'SELECT * FROM ' . $usertable;
$result = mysql_query($query);
if($result) {
    while($row = mysql_fetch_array($result)){
        print $name = $row[$yourfield];
        echo 'Name: ' . $name;
    }
}
else {
print "Database NOT Found ";
mysql_close($db_handle);
}
?>

试过这个，但也没有用：

Alias /phpmyadmin "c:/wamp/apps/phpmyadmin4.1.14/"

# to give access to phpmyadmin from outside 
# replace the lines
#
# Require local
#
# by
#
# Require all granted
#

任何帮助表示赞赏！

Answer 1

首先，我建议对服务器进行SSH验证，对TCP或Netcat进行SSH验证（好，我要停止），以便查看远程MySQL服务器是否真的可以访问。 一些主机（主要是共享主机）要求您先要求它们启用远程MySQL（某些主机在CPanel上具有此选项）。

其次，某些MySQL服务器将某些客户端白名单单独访问。 phpMyAdmin可以帮助您阅读和设置此配置。