连接到本地 MySQL 服务器时出现“连接被拒绝”错误？

Question

I am having this error:

Warning: mysql_connect(): [2002] Connection refused (trying to connect via tcp://127.0.0.1:3306)

I saw a similar question and I tried the solution by changing localhost to 127.0.0.1 , but it is still not working. I am using Mac OS X Lion. Please any help would be appreciated

This is the PHP code I use to connect:

<?php
    require("constants.php");
    // open database
    $connect = mysql_connect(DB_SERVER,DB_USER,DB_PASS) or die('error connecting: ' . mysql_error());
    // select database
    mysql_select_db(DB_NAME) or die('error selecting db: ' . mysql_error());
?>

Answer 1

Try making sure your firewall if open to connections on port 3306.

The command should be ipfw set enable 3306 , but if you want you can read more about actually setting the firewall permissions .

Another thing could be to make sure MySQL is listening on port 3306, edit the my.ini file and set

[client]
port=3306

And then restart MySQL.

Answer 2

I've had that problem before. You can fix it by commenting out "skip-networking" in the configuration. (my.ini or my.cnf, it's /etc/mysql/my.cnf on Linux, not sure about Mac)

-- edit
Also, you can try typing "netstat" in the Terminal, to make sure that mysql is listed there (should be something like 127.0.0.1:mysql or 127.0.0.1:3306). If it is not listed, MySQL either hasn't started, or hasn't been able to bind.