How to determine the max file upload limit in php

Question

How can the file upload size allowed by php settings be determined withing a php script?

Answer 1

You can set Maximum file upload size using ini_set()

  ini_set('post_max_size', '64M');
  ini_set('upload_max_filesize', '64M');

or using the .htaccess file

php_value upload_max_filesize 
php_value post_max_size