Question

I have this small code , why it does not work and how to make it correctly ?

$temp = $_SESSION['contactPersonInterest'][$i];
$temp += ',Medlemskort';
//$_SESSION['contactPersonInterest'][$i] = $temp;

I am testing it with

?><script>alert('<?php echo  $_SESSION['contactPersonInterest'][$i] ?>'+'----------'+'<?php echo $temp ?>');</script> <?php

And what i get is :

blbla,blll----------0

Whats wrong ?

Thank you

Answer 1

String concatenation is done with . in PHP. Try:

$temp .= ',Medlemskort';

Otherwise you perform addition, and if both strings don’t start with numbers, they will be converted to 0 and 0 + 0 = 0 🙂

Have a look at Type Juggling.