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PHP Functions to Clean User Input

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Language: PHP
Posted by: A973C FR
Added: Sep 24, 2012 5:27 AM
Views: 1809
Tags: clean input php user
  1.     <?php
  2.     function cleanInput($input) {
  3.      
  4.     $search = array(
  5.     '@<script[^>]*?>.*?</script>@si', // Strip out javascript
  6.     '@<[\/\!]*?[^<>]*?>@si', // Strip out HTML tags
  7.     '@<style[^>]*?>.*?</style>@siU', // Strip style tags properly
  8.     '@<![\s\S]*?--[ \t\n\r]*>@' // Strip multi-line comments
  9.     );
  10.      
  11.     $output = preg_replace($search, '', $input);
  12.     return $output;
  13.     }
  14.     ?>
  15.     <?php
  16.     function sanitize($input) {
  17.     if (is_array($input)) {
  18.     foreach($input as $var=>$val) {
  19.     $output[$var] = sanitize($val);
  20.     }
  21.     }
  22.     else {
  23.     if (get_magic_quotes_gpc()) {
  24.     $input = stripslashes($input);
  25.     }
  26.     $input = cleanInput($input);
  27.     $output = mysql_real_escape_string($input);
  28.     }
  29.     return $output;
  30.     }
  31.     ?>

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