Question

What do the two equal signs mean when not being used to compare?

$saveOrder  = $listOrder == 'a.ordering';

I’ve never seen anything like this in php…. I am looking at the weblinks Joomla 1.7 admin component.

Thanks

Answer 1

It is used for comparing. Except the result of the comparison is assigned to $saveOrder.

The following code:

<?php

list($listOrder1, $listOrder2) = array('a.ordering', 'a.something_else');

$saveOrder1  = $listOrder1 == 'a.ordering';
$saveOrder2  = $listOrder2 == 'a.ordering';

assigns true to the $saveOrder1 variable and false to the $saveOrder2 variable. If you do not believe, check for yourself here.