请教:php连不上mysql,急盼复,在线等

[taotaobujue]

我的php.ini文件中的mysql配置如下
[MySQL]
; Allow or prevent persistent links.
mysql.allow_persistent = On

; Maximum number of persistent links. -1 means no limit.
mysql.max_persistent = -1

; Maximum number of links (persistent + non-persistent). -1 means no limit.
mysql.max_links = -1

; Default port number for mysql_connect(). If unset, mysql_connect() will use
; the $MYSQL_TCP_PORT or the mysql-tcp entry in /etc/services or the
; compile-time value defined MYSQL_PORT (in that order). Win32 will only look
; at MYSQL_PORT.
mysql.default_port =

; Default socket name for local MySQL connects. If empty, uses the built-in
; MySQL defaults.
mysql.default_socket =

; Default host for mysql_connect() (doesn't apply in safe mode).
mysql.default_host =

; Default user for mysql_connect() (doesn't apply in safe mode).
mysql.default_user =

; Default password for mysql_connect() (doesn't apply in safe mode).
; Note that this is generally a *bad* idea to store passwords in this file.
; *Any* user with PHP access can run 'echo cfg_get_var("mysql.default_password")
; and reveal this password! And of course, any users with read access to this
; file will be able to reveal the password as well.
mysql.default_password =
我的php-mysql模块也装啦.
我的语句如下:
<?
$cc=mysql_connect('192.168.0.18','root','123456');
echo "$cc<br/>";
?>
可还是报错:
Fatal error: Call to undefined function: mysql_connect() in /var/www/html/testmysql.php on line 2

这是怎么回事,求教.求求大侠们啦!在线等!!!!!!!!!!