(in php) Fatal error: Call to undefined function mysql_connect()

I occassionally play around with php, mysql and apache web server in Windows as well as linux. Today when I was fiddling with php-mysql in Windows, I came across the error given in the title of this post as well as below. The solution was pretty simple,though, there was a small amount of struggle to search in google and to edit the config files appropriately. Fatal error: Call to undefined function mysql_connect() [phpdir] -- the folder where php is installed in Windows 1)Open [phpdir]\php.ini using your favourite editor and change the line ;extension=php_mysql.dll to extension=php_mysql.dll 2) Ensure that the file php_mysql.dll is present in [phpdir]\ext 3) Ensure that the dll file libmysql.dll is present in [phpdir]\ 4) Restart the Apache server if that still does not work then restart the computer. Note : [phpdir] -- the folder where php is installed in Windows Test whether the php module has properly included mysql by opening a file containing the line <? phpinfo(); ?> on your web server.