数据库被输入恶意代码，为了保证你的数据库的安全，你必须得小心去清理。有了下面一个超级方便的功能，即可快速清除数据库恶意代码。
function cleanInput($input) { $search = array( '@]*?>.*?@si', // Strip out javascript '@<[\/\!]*?[^<>]*?>@si', // Strip out HTML tags '@ ]*?>.*? @siU', // Strip style tags properly '@@' // Strip multi-line comments ); $output = preg_replace($search, '', $input); return $output; } function sanitize($input) { if (is_array($input)) { foreach($input as $var=>$val) { $output[$var] = sanitize($val); } } else { if (get_magic_quotes_gpc()) { $input = stripslashes($input); } $input = cleanInput($input); $output = mysql_real_escape_string($input); } return $output; } // Usage: $bad_string = "Hi! It's a good day!"; $good_string = sanitize($bad_string); // $good_string returns "Hi! It\'s a good day!" // Also use for getting POST/GET variables $_POST = sanitize($_POST); $_GET = sanitize($_GET);