title: Why is max_input_vars directive available in PHP 5.3.3 in my server's PHP instance?
body: <p>As per PHP's official Documentation <a href="http://php.net/manual/en/info.configuration.php" rel="nofollow">max_input_vars directive is available from PHP 5.3.9</a>.</p>
  
  <p>My server's PHP version is as follows :</p>
  
  <pre><code>$ php -version
  PHP 5.3.3 (cli) (built: Sep 30 2014 06:37:02) 
  Copyright (c) 1997-2010 The PHP Group
  Zend Engine v2.3.0, Copyright (c) 1998-2010 Zend Technologies
  </code></pre>
  
  <p>But with PHP 5.3.3, I am still able to set <code>max_input_vars</code> to any value other than the default value.</p>
  
  <p>My server OS is CentOS release 5.11 (Final).</p>
  
  <p>So can anyone explain to me how is this directive available in PHP 5.3.3 in my case ?</p>