php kill bot

if($_GET['cmd']=='stop'){
    $l=exec('ps -e -o pid,args |grep -E "php '.$id_ev.' [0-9]+ [0-9]+ '.$typePrice.'"');
    //убить процес
    if(preg_match_all('#^\d+#',$l,$tmp)){
        foreach($tmp[0] as $v){
            exec('kill -9 '.$v);
        }

    }