Question

In the code below I want to apply the object “$activeclass” as a DIV class. I thought the end pointer I included would apply this only to the last iteration of the array, but instead it is applying the class to all iterations.

<div id="right_bottom">
                <?
                $content = is_array($pagedata->content) ? $pagedata->content : array($pagedata->content);
                foreach($content as $item){
                $activeclass = end($content) ? 'active' : ' ';
                    ?>
                    <div id="right_side">
                           <div id="<?=$item->id?>" class="side_items <?=$activeclass?>">
                             <a class="content" href="<?=$item->id?>"><img src="<?=PROTOCOL?>//<?=DOMAIN?>/img/content/<?=$item->image?>"><br />
                             <strong><?=$item->title?></strong></a><br />
                             <h2><?=date('F j, Y',  strtotime($item->published))?></h2><br />
                         </div>
                    </div>
                    <?
                }
                ?>
</div>

Any ideas where I am making a mistake? How can I apply the class $activeclass only to the last iteration of my “foreach” statement?

Answer 1

The simplest way is to keep a count:

$i = 0; $size = count( $content);
foreach( $content as $item) {
    $i++;
    $activeclass = ( $i < $size) ? '' : 'active';
}

Alternatively, you can compare the last element with the current element (if your array is consecutively numerically indexed starting with 0 [Thanks to webbiedave for pointing out the assumptions made by this method]):

$last = count( $content) - 1;
foreach( $content as $item) {
    $activeclass = ( $content[$last] === $item) ? 'active' : '';
}

Note that this approach will not work if your array has duplicate items.

Finally, you can compare indexes in the following way:

// Numerical or associative
$keys = array_keys($content); 
$key = array_pop($keys); // Assigned to variables thanks to webbiedave

// Consecutive numerically indexed
$key = count( $content) - 1; 

foreach( $content as $current_key => $item) {
    $activeclass = ( $current_key === $key) ? 'active' : '';
}