Example of usage: $security = new Security ($dir); // Directory for check. $security-> mail_alert ('admin@admin.ru'); // Optional. $security-> search ('iframe', 'base64_decode', 'base64_encode', 'eval'); // What to search. Optional: if it not called, script will check - "executable" or not. $risky_files = $security-> scan (); // Start seach. Return array.