在每个列表项后添加逗号，但仅当列表中有多个项时才添加逗号

Question

I have a list of tags that I'm using to filter projects inside a data attribute.

I used split() for my array, however I need to add a comma as a separator if there is more than one item in the list. Ideally this is how I would like it to work.

// Senario 1 – Single item
<a href="#" data-tag="projects">Project Title</a>

// Senario 2 – More than 1 item
<a href="#" data-tag="product,commercial,housing">Project Title</a>

My current code:

<?php foreach($project->tags()->split(',') as $tag): ?>
   <a href="#" data-tag="<?php echo $tag; ?>">Project</a>
<?php endforeach; ?>  

I'm just not sure how to check if I've completed the loop after first.

Thanks for the help.

Answer 1

Try implode function. manual

<a href="#" data-tag="<?php echo implode(',', $project->tags()) ?>">Project</a>