本文實例講述了php快速查找數據庫中惡意代碼的方法。分享給大家供大家參考。具體如下:
數據庫被輸入惡意代碼,為了保證你的數據庫的安全,你必須得小心去清理。有了下面一個超級方便的功能,即可快速清除數據庫惡意代碼。
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 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);