<?php class myFunctions extends saja {



function add($x, $y){
    if($x=='' || $y==''){
        $this->text('Missing x or y value.', 'errors');
        return $this->send();
    }
    
    if(is_numeric($x) && is_numeric($y)){
        return $x + $y;
    }

    echo $x.$y;
    return $this->send();
}



}?>