php - PDO无法连接远程mysql服务器

Question

服务器A(192.168.1.3)

mysql server(5.6.12) port 6603,socket/var/run/mysql/mysql.sock

php(5.5.0) php.ini pdo_mysql.default_socket =/var/run/mysql/mysql.sock

服务器B(192.168.1.4)

mysql server(5.5.11) 端口 3306,socket/var/run/mysql/mysql.sock

在服务器A工作时使用

$conn = new PDO('mysql:hostname=localhost;dbname=DB_TEST','username','password');

但使用时无法连接到服务器B

$conn = new PDO('mysql:hostname=192.168.1.4;dbname=DB_TEST;port=3306','username','password');

ERROR:SQLSTATE[28000] [1045] Access denied for user 'username'@'localhost' (using password: YES)

继续努力

$conn = mysql_connect('192.168.1.4:3306', 'username', 'password');

Answer 1

$conn = new PDO('mysql:hostname=192.168.1.4;dbname=DB_TEST;port=3306','username','password');

应该是

$conn = new PDO('mysql:host=192.168.1.4;dbname=DB_TEST;port=3306','username','password');

hostname 对于 dsn 无效，因此 PDO 忽略主机并使用默认值，即 localhost