获取foreach循环后的最后一个数组索引

Question

Hi I'm trying to find the last array of $linkNumber from my for each loop as i have an image outside the foreach loop that needs the data-slide-index to be the last array plus 1. Any help how to achieve this?

<?php $linkNumber = 0;?>  

<?php foreach ($variables as $variable){ ?>
     <img src="$variable" data-slide-index="$linkNumber++"/>
<?php } ?>
<img src="#" data-slide-index="<?php $linkNumber + 1;?>"

Answer 1

If we ignore that your variables won't be printed or evaluated at all for the moment; essentially what you are doing is correct. Your problem is most of your logic isn't being executed.

You need to explicitly echo variables and evaluations should be inside a PHP block, as follows

<?php
$linkNumber = 0;

foreach ($variables as $variable) :
    ?>
    <img src="<?= $variable; ?>" data-slide-index="<?= $linkNumber; ?>"/>
    <?php
    $linkNumber++;
endforeach;
?>

<img src="#" data-slide-index="<?= $linkNumber; ?>"