Question

So this is pretty basic, I know! Sorry, just one of those days.

I’ve got an array of tags collected from a database. There could be any number of tags in this array. However, I only want to output 4.

So I currently have this code:

$iteration = 0;
foreach ($tagarray as $tag) { ?>
<div class="tagbutton listv">
<span><?php echo $tag; ?></span>,
</div>  
<?php 
$iteration++;
    if ($iteration == 4) {
        break;
    }
} ?>

You’ll see after </span> there’s a , comma. Obviously this looks weird if the output looks like this:

tag1, tag2, tag3,

With a trailing comma. So I thought I could put this where the comma currently is:

<?php if ($iteration < count($tagarray) {echo ",";} ?>

That works, but, only when the count of $tagarray is greater than 4 or something. And, like I say, $tagarray could be any value.

I also tried

<?php if ($iteration == 0 || $iteration == 1 || $iteration == 2 || $iteration == 3) {echo ",";}?>

Which, although a bit repetitive, should work, doesn’t, because $tagarray could contain 2 tags, and therefore still have a trailing comma.

I realise this is probably a simple one, but hey, I really appreciate the help!

Thanks!

Jack

Answer 1

If you want to do it manually, just prepend the comma before any tag but the first one. Use a control variable to detect the first tag.

$iteration = 0;
$first=true;
foreach ($tagarray as $tag) { ?>
<div class="tagbutton listv">
<span><?php 
if($first){$first=false;}
else{echo ",";}
 echo $tag; 
?></span>
</div>  
<?php 
$iteration++;
    if ($iteration == 4) {
        break;
    }
} ?>

If you want to use library functions, use implode as suggested by Cetra and Bogdan.