Re: PHP extension=php_mysql.dll not loading;

[Chis Florinel]

In your php.ini you need to uncoment the following line:
;extension=php_mysql.dll becomes:
extension=php_mysql.dll

save & restart apache (or your web server)
Also, you should make sure that extension_dir is set properly (in your php.ini file):

eg for Windows:
extension_dir = "C:/www/php5/ext/"

and if you still have problems, copy libmysql.dll to %windir%\system32 folder... (php_mysql.dll depends on libmysql.dll)

php_mysqli.dll is an extension used for mysql >=4.1 and has functions like prepare(), commit() and so on... for compatibility issues you can choose to use php_mysql...