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PHP Build a Simple PHP Application Wrapping Up The Project Objects

Posted by Sudip Banerjee
Sudip Banerjee
Courses Plus Student 3,593 Points

How to assign a value17 to the property number of the object $checker and what condition should i put for echo is|is not

This is the problem statement PalprimeChecker objects have a property called number. This task has two parts. First, assign that property a value of 17. Second, remove the two hash signs (##) in the first echo statement and instead concatenate the value of this number property. (Be sure to preserve the space after the two hash signs by concatenating a space after the number.)

palprimes.php 
<?php
require_once("class.palprimechecker.php");




$checker = new PalprimeChecker();
$checker->number()=17;
echo "The number" . " $checker->number()";
echo "(is|is not)";
echo " a palprime.";

?>

3 Answers

Leonardo Hernandez
Leonardo Hernandez
13,798 Points
Leonardo Hernandez
Leonardo Hernandez
13,798 Points

Hello! Your are doing great so far!

The only problem I see so far in this challenger is that you are treating the 'number' property like a method.

Methods are like functions in that they require those parenthesis you have there after 'number'. Number in this objects's case is not a method.

set properties like so: 

<?php
$object = new Object();
$object->property = 'foo'; 
?>

further, if your going to concatenate the value of number, it should not be in quotes.

Sudip Banerjee
Sudip Banerjee
Courses Plus Student 3,593 Points

Thnx for ur help

Ben Hudson
Ben Hudson
2,307 Points
Ben Hudson
Ben Hudson
2,307 Points 
            <p>
$checker = new PalprimeChecker();

$checker->number = 17;


echo "The number" . $checker . " ";
echo "(is|is not)";
echo " a palprime.";

?></p>
            ```
           Would some mind taking a look. I don't get why this doesn't work. It is most probably something stupid
Ben Hudson
Ben Hudson
2,307 Points
Ben Hudson
Ben Hudson
2,307 Points

The error i get is the following

PHP Catchable fatal error: Object of class PalprimeChecker could not be converted to string in palprimes.php on line 9

But im not sure whats happening