[請益] php無法連至mysql?

[Aligu1009 (=.=)]

我在RH Linux 上用source 安裝 Apache MySQL PHP 至我自己的家目錄下
(因為我沒有管理者權限)

目前apache + php可正常使用，直接在shell 下用mysql -uusername -p
也可以正常的連上資料庫

問題：當我從php中用
$con = mysql_connect("localhost","username","password") or
        die ("cannot find server: " . mysql_error());

卻會得到
Warning: mysql_connect() [function.mysql-connect]: Access denied for user
'username'@'localhost' (using password: YES) in
/home/sean/share/apache2/htdocs/dev/init_db.php on line 2
cannot find server: Access denied for user 'username'@'localhost' (using
password: YES)

我已用mysql的root帳號嚐試過以下的五種解法，但結果都一樣：

GRANT SELECT, INSERT, UPDATE, DELETE, LOCK TABLES ON dbname.* TO
username@127.0.0.1 IDENTIFIED by 'password';

GRANT SELECT, INSERT, UPDATE, DELETE, LOCK TABLES ON dbname.* TO
username@localhost IDENTIFIED by 'password';

SET PASSWORD FOR username@127.0.0.1=PASSWORD('password');

SET PASSWORD FOR username@localhost=PASSWORD('password');

FLUSH privileges;

----
另外，我為了搞清楚到底是PHP的問題還是MySQL的問題，
我用python寫了一小段程式access mysql資料庫，同樣發生exception:
"Access denied for user 'username'@'localhost' (using password: YES)"

有人有經驗能分享嗎？任何建議 (在我的帳號權限範圍內) 我都能試試看

--
※ 發信站: 批踢踢實業坊(ptt.cc) 
◆ From: 75.102.80.84
推 buganini:mysql version? client library version?
→ buganini:cli php跑起來如何呢?
→ averywu:try mysql_connect("",$uname,$pass);
→ buganini:看mysql的log