Updating upload_max_filesize in joomla

I am using frame work Joomla1.5. I am not able to submit form with multiple uploaded files having each file size more than 3mb. i tried to set 开发者_Python百科post_max_size, upload_max_size parameters in layout default.php(views/tmpl/default.php) as

ini_set('upload_max_filesize', '5M');
ini_set('post_max_size', '15M');

but that parameters still showing default sizes only. can you please tell me where/how to set value in joomla

Thanks in advance

You can set the maximum upload size in joomla from admin panel. You have to go site -> Global configuration -> System->Maximum Size (in bytes).

Find the php.ini file that your server uses and change the 'upload_max_filesize' value to a higher number and restart the server.