function test($sRQ)
    {
        $sRQ = strtolower($sRQ);
        $this->rq = $sRQ;
        $aValues = array();
        $aTemp = array(); // temp array
        $aWords = array(); //
        $aSep = array(' and ',' or '); // separators for detect the
        $sConditions = '(';
        $matches = array();
        $sSep = '';
        // is there an attempt to unused part of the rq?
        if (is_int((strpos($sRQ,"#")))&&$this->_in_post('#')) return $this->detect();
        
        // is there a attempt to do a 2nd SQL requete ?
        if (is_int(strpos($sRQ,';'))){
            $aTemp = explode(';',$sRQ);
            if ($this->_in_post($aTemp[1])) return $this->detect();
        }
        
        $aTemp = explode(" where ",$sRQ);
        if (count($aTemp)==1) return FALSE;
        $sConditions = $aTemp[1];
        $aWords = explode(" ",$sConditions);
        if(strcasecmp($aWords[0],'select')!=0) $aSep[] = ',';
        $sSep = '('.implode('|',$aSep).')';
        $aValues = preg_split($sSep,$sConditions,-1, PREG_SPLIT_NO_EMPTY);

        // test the always true expressions
        foreach($aValues as $i => $v)
        {
            // SQL injection like 1=1 or a=a or 'za'='za'
            if (is_int(strpos($v,'=')))
            {
                 $aTemp = explode('=',$v);
                 if (trim($aTemp[0])==trim($aTemp[1])) return $this->detect();
            }
            
            //SQL injection like 1<>2
            if (is_int(strpos($v,'<>')))
            {
                $aTemp = explode('<>',$v);
                if ((trim($aTemp[0])!=trim($aTemp[1]))&& ($this->_in_post('<>'))) return $this->detect();
            }
        }
        
        if (strpos($sConditions,' null'))
        {
            if (preg_match("/null +is +null/",$sConditions)) return $this->detect();
            if (preg_match("/is +not +null/",$sConditions,$matches))
            {
                foreach($matches as $i => $v)
                {
                    if ($this->_in_post($v))return $this->detect();
                }
            }
        }
        
        if (preg_match("/[a-z0-9]+ +between +[a-z0-9]+ +and +[a-z0-9]+/",$sConditions,$matches))
        {
            $Temp = explode(' between ',$matches[0]);
            $Evaluate = $Temp[0];
            $Temp = explode(' and ',$Temp[1]);
            if ((strcasecmp($Evaluate,$Temp[0])>0) && (strcasecmp($Evaluate,$Temp[1])<0) && $this->_in_post($matches[0])) return $this->detect();
        }
        return FALSE;
    }