Can't get PHP to support mySQL

I cannot get PHP to load the mySQL module. I have enabled it in php.ini and I have tried changing the extension_dir to "c:/php" AND "c:\php", which is where I copied the corresponding .dll files. I have also tried enabling "php_mysql.dll" AND "php_mysqli.dll" separately. I cannot figure out what is going on. Every time I try to run a MySQL page, I get "Fatal error: Call to undefined function mysql_connect() in C:\webspacedirectory\mysql_up.php on line 13" Thanks in advance, Don