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PHP

Julian McNeill
Julian McNeill
9,444 Points

Code Challenge: Objects

I dont have the file that the second task is asking for. Where would I find it

2 Answers

I don't think you type in a static 17 even though it passes. I think the idea is you're supposed to concatenate that with the variable that holds the value so you don't repeat yourself (DRY).

this passes:

<?php

include('class.palprimechecker.php');
$checker = new PalprimeChecker();
$checker->number = 17;

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

?>
Julian McNeill
Julian McNeill
9,444 Points

I need help on the 5 of 7 task the question goes:

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”.

this is my answer

<?php include("class.palprimechecker.php");


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

if($checker -> isPalprime()){
echo "is ";
} else {
echo "is not ";
}

echo "The number 17 ";

echo "a palprime.";

?>

this is wrong but it tells me:

It seems like you are calling the right method and you have the removed various placeholder characters (##|()), but something in the output is not quite right. Please double-check the preview.

I'm sort of confused on what I'm doing wrong.

Nathan Kinsey
Nathan Kinsey
12,283 Points

You almost got it! It is just that your code is out of order. Instead try:

<?php

require_once ("class.palprimechecker.php"); 
$checker = new PalprimeChecker(); 
$checker-> number = 17;

echo "The number " . 17; 
if ($checker->isPalprime()){echo " is";} else {echo " is not";}
echo " a palprime.";

?>