защита от sql инекций

<?php
defined('PROTECTOR') or die('Error: restricted access');
class InitVars {
# Недопустимые слова в запросахINSERT
 var $deny_words = array('UNION','CHAR','INSERT','DELETE','SELECT','UPDATE','GROUP','ORDER','BENCHMARK','union','char','insert','delete','select','update','group','order','benchmark','UNIOu','UNIoN','UNiON','UnION','uNION','uNIOn','uNIoN','uNiON','unION','uniOn','UNIon','uNiOn','UNion','UnIoN','UnIon','unIoN','DELETe','DELEte','DELete','DElete','Delete','dELETE','deLETE','deleTE','delETE','DeLeTe','dElEtE','dElETE','DELeTe','DElETE','DeLETE','DELEtE','DEletE','DeleTE','DelETE','DEleTE','DELetE','CHAr','CHaR','ChAR','cHAR','chAR','CHar','CahR','chAr','cHAr','chAR','ChAr','INSERt','INSErT','INSeRT','INsERT','InSERT','iNSERT','INSErt','INSerT','INseRT','InsERT','inSERT','INSert','INserT','InseRT','insERT','INsert','InserT','inseRT','Insert','insertT','SELECt','SELEcT','SELeCT','SElECT','SeLECT','sELECT','SELEct','SELecT','SEleCT','SelECT','seLECT','SELect','SElecT','SeleCT','selECT','SElect','SelecT','seleCT','Select','selectT'
,'GROUP','GROUp','GROuP','GRoUP','GrOUP','gROUP','GROup','GRouP','GroUP','grOUP','GRoup','GrouP','groUP','Group','grouP','ORDEr','ORDeR','ORdER','OrDER','oRDER','ORDer','ORdeR','OrdER','orDER','ORder','OrdeR','ordER','Order','ordeR','UPDATe','UPDAtE','UPDaTE','UPdATE','UpDATE','uPDATE','UPDAte','UPDatE','UPdaTE','UpdATE','upDATE','UPDate','UPdatE','UpdaTE','updATE','UPdate','UpdatE','updaTE','Update','updatE','BENCHMARK','BENCHMARk','BENCHMArK','BENCHMaRK','BENCHmARK','BENChMARK','BENcHMARK','BEnCHMARK','BeNCHMARK','bENCHMARK','BENCHMArk','BENCHMarK','BENCHmaRK','BENChmARK','BENchMARK','BEncHMARK','BenCHMARK','beNCHMARK','BENCHMark','BENCHmarK','BENChmaRK','BENchmARK','BEnchMARK','BencHMARK','benCHMARK','BENCHmark','BENChmarK','BENchmaRK','BEnchmARK','BenchMARK','bencHMARK','BENChmark','BENchmarK'
,'BENchmarK','BEnchmaRK','BenchmARK','benchMARK','BENchmark','BEnchmarK','BenchmaRK','benchmARK','BEnchmark','BenchmarK','benchmaRK','Benchmark','benchmarK','BeNcHmArK','bEnChMaRk','BEnCHMaRK','BENChMaRK','truncate','TRUNCATE','TRUNCATe','TRUNCAtE','TRUNCaTE','TRUNcATE','TRUnCATE','TRuNCATE','TrUNCATE','tRUNCATE','TRUNCAte','TRUNCatE','TRUNcaTE','TRUncATE','TRunCATE','TruNCATE','trUNCATE','TRUNCate','TRUNcatE','TRUncaTE','TRuncATE','TrunCATE','truNCATE','TRUNcate','TRUncatE','TRuncaTE','TruncATE','trunCATE','TRUncate','TRuncatE','TruncaTE','truncATE','TRuncate','TruncateE','truncaTE','Truncate','truncatE'
,'groUp','grOup','gRoup','grOUp','gROup','gROUp','ordEr','orDer','oRder','orDEr','oRDer','oRDEr','updaTe','updAte','upDate','uPdate','updATe','upDAte','uPDate','upDATe','uPDAte','uPDATe','uniOn','unIon','uNion','unIOn','uNIon','uNIOn','chAr','cHar','cHAr','inseRt','insErt','inSert','iNsert','insERt','inSErt','iNSert','inSERt','iNSErt','iNSERt','seleCt','selEct','seLect','sElect','selECt','seLEct','sELect','seLECt','sELEct','sELECt','truncaTe','truncAte','trunCate','truNcate','trUncate','tRuncate','truncATe','trunCAte','truNCate','trUNcate','tRUncate','trunCATe','truNCAte','trUNCate','tRUNcate','truNCATe','trUNCAte','tRUNCate','trUNCATe','tRUNCAte','tRUNCATe'
,'GrOuP','gRoUp','GRoUp','GrOUp','OrDeR','oRdEr','gRouP','grOuP','OrDeR','orDeR','oRdeR','UpDaTe','uPdAtE','UPdAtE','uPDatE','upDAtE','UnIoN','uNiOn','uNIoN','UniOn','InSeRt','iNsErT','iNSeRt','InsErT','InSerT','iNsERt','sElEcT','SeLeCt','sELeCt','SelEcT','sElECt','SeLecT','deleTe','delEte','deLete','dElete','delETe','deLEte','dELete','deLETe','dELEte','dELETe','TrUnCaTe','tRuNcAtE','TRunCAte','trUNcaTE','tRUncATe','TruNCatE','trUNcaTE','TRunCAte','TRUnCATe','TRuNCAtE','tRUNcATE','TrUNCaTE','tRuncAte','TRuNcATE','BeNcHmArK','bEnChMaRk','BEncHMarK','beNCmArk','bENcHmARk','BenChMarK','BEncHmaRK','beNChMArk'
,'TRUNCATe','TRUNCAtE','TRUNCaTE','TRUNcATE','TRUnCATE','TRuNCATE','TrUNCATE','tRUNCATE','TRUNCAte','TRUNCatE','TRUNcaTE','TRUncATE','TRunCATE','TruNCATE','trUNCATE','TRUNCate','TRUNcatE','TRUncaTE','TRuncATE','TrunCATE','trunCATE','TRUncate','TRuncatE','TruncaTE','truncATE','TRuncate','TruncaE','truncaTE','Truncate','truncatE'
);
function InitVars() {
}

# Метод конвентирует суперглобальные массивы $_POST, $_GET в перемнные
# Например : $_GET['psw'] будет переобразовано в $psw с тем же значением
/*function convertArray2Vars () { // убрал iNoY

foreach($_GET as $_ind => $_val) {
                global $$_ind;
                if(is_array($$_ind)) $$_ind = htmlspecialchars(stripslashes($_val));
        }

foreach($_POST as $_ind => $_val) {
                global $$_ind;
                if(is_array($$_ind)) $$_ind = htmlspecialchars(stripslashes($_val));

}
}
*/

# Метод проверяет $_GET и $_POST переменные на наличие опасных данных и SQL инъекций
function checkVars() {
        //Проверка опасных данных.
        foreach($_GET as $_ind => $_val) {
                        $_GET[$_ind] = htmlspecialchars(stripslashes($_val));

$exp = explode(" ",$_GET[$_ind]);
 foreach($exp as $ind => $val) {
 if(in_array($val,$this->deny_words)) $this->antihack("Запрещено!Доступ закрыт! Ваш ip адресс и браузер помечен! Админу отправлено сообщение!");
 }
 }

foreach($_POST as $_ind => $_val) {
                        $_POST[$_ind] = htmlspecialchars(stripslashes($_val));

$exp = explode(" ",$_POST[$_ind]);
 foreach($exp as $ind => $val) {
 if(in_array($val,$this->deny_words)) $this->antihack("Запрещено!Доступ закрыт! Ваш ip адресс и браузер помечен! Админу отправлено сообщение!");
 }
 }

}

function antihack($msg) {
 echo 'АНТИХАК: '.$msg.'';
$times = date("H:i:s");
$date = date("d.m.Y");

$brauser=htmlspecialchars(stripslashes($_SERVER['HTTP_USER_AGENT']));
$ip=htmlspecialchars(stripslashes($_SERVER['REMOTE_ADDR']));
mysql_query("INSERT INTO `antihak` SET `ip` = '$ip', `brauser` = '$brauser'");
mysql_query("INSERT INTO `msg_r` SET `user_from` = 'Система', `user_to` = 'Ваш Ник', `time` = '$times | $date', `read` = 1, `mail_msg` = ' пытались взломать! IP: $ip браузер: $brauser'");
    die;
}

}