PHP quick Way to find malicious code in a database _php tutorial

PHP quick Way to find malicious code in a database

The examples in this article describe how PHP quickly finds malicious code in a database. Share to everyone for your reference. Specific as follows:

The database is entered into malicious code, in order to keep your database secure, you have to be careful to clean up. With the following super-convenient feature, you can quickly clear the database of malicious code.

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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);

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