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[英]Apache PHP script can't connect to remote database/ODBC/MySQL but works from command line
[英]I can remotely connect to mySQL database in command line, but not with php script
错误:
致命错误:在......
我可以在命令行中远程连接,但不使用 php,有什么想法在哪里看?
以下是详细信息:
Webserver A: 1.1.1.1 保存 php 脚本:
<?php
error_reporting(E_ALL);
ini_set('display_errors', '1');
$REGIS_DB_SERVER = "2.2.2.2"; //I've tried the IP as well as "pretendhostname.com"
$REGIS_DB_NAME = "db_name";
$REGIS_DB_USER = "tech"; // or any other user name
$REGIS_DB_PASSWORD = "password";
//connect to db
$db = new PDO("mysql:host = $REGIS_DB_SERVER; dbname=$REGIS_DB_NAME; charset=utf8", $REGIS_DB_USER, $REGIS_DB_PASSWORD);
print_r($db -> errorInfo());
echo "Connected<br>";
$sql = "CREATE TABLE Test(PersonID int,LastName varchar(255),FirstName varchar(255),Address varcha(255),City varchar(255))";
$result = $db->query($sql);
echo "$result <be>";
?>
网络服务器 B:2.2.2.2 保存 mySQL 数据库:运行 Ubuntu 11.04
在 /etc/mysql/my.cnf
# Instead of skip-networking the default is now to listen only on
# localhost which is more compatible and is not less secure.
#Commented out to allow remote connections to this database
#bind-address = 216.70.81.240
我运行mysql> select Host,User from user;
并得到:
+-----------------------+------------------+
| Host | User |
+-----------------------+------------------+
| % | root |
| 127.0.0.1 | root |
| 1.1.1.1 | tech |
| localhost | debian-sys-maint |
| localhost | root |
| localhost | tech |
+-----------------------+------------------+
在 ubuntu 12.04 中打开端口 3306 以允许从任何 ip 连接到 mysql意味着这不是 iptable 问题并测试连接:
我通过 ssh 进入 Webserver A 1.1.1.1 并运行:
mysql -u tech -p -h 2.2.2.2
Enter password:
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 200672
Server version: 5.1.63-0ubuntu0.11.04.1 (Ubuntu)
您需要禁用 SELinux,以运行以下 CMD
setsebool httpd_can_network_connect=1
发现: PDO无法连接远程mysql服务器后发现,如果没有“理解”主机,PDO连接会默认为host=localhost。 仔细观察,我意识到作业之间有 2 个空格。 我没有意识到空格在语法中很重要。
所以最后,这是一个语法错误:
工作解决方案(通过删除空格):
$db = new PDO("mysql:host=$REGIS_DB_SERVER; dbname=$REGIS_DB_NAME; charset=utf8", $REGIS_DB_USER, $REGIS_DB_PASSWORD);
这绝对是一个数据库权限/特权问题。 请求您的 dba/ GRANT privileges
本地服务器访问数据库的权限
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