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PHP Build a Simple PHP Application Wrapping Up The Project Objects

Devin Scheu
Devin Scheu
66,191 Points

Help With Php Conditionals

Question: 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”.

My Code:

<?php


include("class.palprimechecker.php");


$checker = new PalprimeChecker();


$checker->number = 17;


echo "The number " . $checker->number . " ";


if ($checker === true){

  echo "is"

}


else {

  echo "is not"

}


echo " a palprime.";


?>

2 Answers

Hi Devin,

You need to call the isPalprime() method on the $checker object. That method is what will return true or false. You also need to end your echo statements inside the if/else block with semi-colons.

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

`

kevin jordan
kevin jordan
11,353 Points

Hey Devin -

Pretty sure you have a type error going on. That is when using === instead of ==, you are checking for type AND value. Therefor $checker will never be equivalent to true because true is a boolean and $checker is a PalPrimeChecker object.

Hope this gets you going !! kj