what am i doing wrong??

PalprimeChecker objects have a method called isPalprime(). This method does not receive any arguments. It returns true if the number property contains a palprime, and it returns false if the number property does not contain a palprime. (Tip: 17 is not a palprime.) Turn the second echo statement into a conditional that displays “is” or “is not” appropriately. The conditional should call the isPalprime method of the $checker object. If the isPalprime method returns true, then echo “is”; otherwise, echo “is not”.

<?php

include_once("class.palprimechecker.php");

$checker = new PalprimeChecker; $checker->number = 17;

echo "The number" . $checker->number ; if ($checker->Palprime()){ echo "is";} else { echo "is not";}

} echo " a palprime.";

?>