PHP while last loop

Question

I have a code like:

<?php $loop = some array with posts;
      while ( $loop->have_posts() ) : $loop->the_post(); ?>
            <div class="class">
                <p>(data)</p>
             </div>   
     <?php endwhile; ?>

Now I want to change the div class (from "class" to "class2") for the very last loop. How to do that?

Example:

When "some array with posts" have now 4 records then I'm getting:

<div class="class"><p>data</p></div>
<div class="class"><p>data</p></div>
<div class="class"><p>data</p></div>
<div class="class"><p>data</p></div>

And I want to get:

<div class="class"><p>data</p></div>
<div class="class"><p>data</p></div>
<div class="class"><p>data</p></div>
<div class="class2"><p>data</p></div> <!-- this one is different -->

I'm looking for something that will work always no matter how many array elements there will be.

Tanks!

I'm not sure, but can't you use again the $loop->have_posts() to check if that is the last one? — Bruno Costa
– Bruno Costa, Commented Jan 28, 2011 at 14:21
possible duplicate of How do you find the last element of an array while iterating using a foreach loop in php ? — karim79
– karim79, Commented Jan 28, 2011 at 14:23

benhowdle89 · Accepted Answer · 2011-01-28 14:23:23Z

4

<?php
$num_rows = mysql_num_rows($result1);
$i = 0;
while ($row = mysql_fetch_array($result1, MYSQL_ASSOC)) {
    $i++;
    /*
    your code
     */
    if ( $i == ( $num_rows - 1 ) )
        //you're on last line...    
}
?>

Taken from http://www.phpbuilder.com/board/showthread.php?t=10359504 here, just adapt this to your needs and you can easily change the last iteration in the loop

answered Jan 28, 2011 at 14:23

benhowdle89

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4 Comments

eykanal Over a year ago

Note that this adds an additional database hit per pageload, you may want to consider running mysql_fetch_array before the while loop and then just acting on the resultant array to save database hits.

benhowdle89 Over a year ago

hi eykanal, this question is nothing to do with a mysql db, but it was the loop bit that i was suggesting for the O/P

t31os Over a year ago

+1 - The user only needs a basic counter(the mysql part is irrelevant, it's just part of the example).

Ben Sheldon Over a year ago

If the questioner is using wp_query() to produce $loop, they can get the total number of posts using $loop->post_count. See the codex.

Duncanmoo · Accepted Answer · 2014-05-16 13:28:41Z

4

Lots of answers here but none refers to $wp_query->post_count and $wp_query->current_post both useful in the loop:

<?php 
$loop = array(); //some array with posts;
while ( $loop->have_posts() ) : 
    $loop->the_post();
    $class = 'class';
    if($loop->post_count == $loop->current_post+1){ // if this is the last item
        $class = 'class2';
    }?>
        <div class="<?php print $class ;?>">
            <p>(data)</p>
         </div>   
 <?php endwhile; ?>

edited May 16, 2014 at 13:28

answered Oct 23, 2012 at 13:38

Duncanmoo

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2 Comments

honk31 Over a year ago

i guess this is the correct answer, exept current_post starts with a zero, not a one, so post_count == current_post will never be true. guess this one is more correct: $loop->post_count == ($loop->current_post + 1)

Duncanmoo Over a year ago

Thanks @honk31 the problem with untested pseudocode is you don't actually test it, of course current_post is an index value!

Beeksi Waais · Accepted Answer · 2011-03-17 11:31:53Z

1

You can use a WP_query object. You have two useful instances (post_count and current_post).

// Example
<?php $query = new WP_Query(array('cat' => 112));
if ( $query->have_posts() ) : while ( $query->have_posts() ) : $query->the_post(); ?>

Then

<div class="post<? if(($query->current_post + 1) == $query->post_count) echo ' last'?>">

Easy and quick. ;)

answered Mar 17, 2011 at 11:31

Beeksi Waais

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Comments

Tim Martin · Accepted Answer · 2011-01-28 14:31:31Z

The best you can do is probably to put the final call outside the while loop, and change your while loop logic so that it exits early. Instead of:

while ($post = getPost()) {
    printPost($post);
}

do something like

$last = getPost();
$post = getPost();
while ($post != null) {
    printPost($last);
    $last = $post;
    $post = getPost();
}
printSpecial($post);

Edit: I've been assuming that you don't know the number of posts until you've iterated over them, and that the interface that returns posts until they are exhausted is the only one available. If you have a count and can access them by number, then the other suggestions will work fine. In fact, if you can count on the number of posts being small, then you might be best just to read them into an array and do it with a for loop rather than a while loop.

Dogbert · Accepted Answer · 2011-01-28 14:25:49Z

0

<?php $loop = some array with posts;
      while ( $loop->have_posts() ) : $loop->the_post();
         $class = $loop->have_posts() ? 'class' : 'class2'; ?>
            <div class="<?php echo $class ?>">
                <p>(data)</p>
             </div>   
     <?php endwhile; ?>

answered Jan 28, 2011 at 14:25

Dogbert

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Comments

johannes · Accepted Answer · 2011-01-28 14:33:47Z

If you have control over the data structure of $loop you might convert int to an iterator and use a CachingIterator on top of it. If you don't control a bit more complicated might be to build an Iterator as wrapper:

<?php
class PostIterator implements Iterator {
    private $have_post;

    function __construct($loop) {
        $this->loop = $loop;
    }

    function rewind() {
        $this->have_post = $this->loop->have_posts(); // looks like we have to call "next" to get the first element, too
    }

    function next() {
        $this->have_post = $loop->have_posts();
    }

    function valid() {
        return $this->have_post;
    }

    function key() {
        return 0; // not used in this case, better implementation might have aocunter or such
    }

    function current() {
         return $this->loop->the_post();
    }
}

$ci = new CachingIterator(new PostIterator($loop)
foreach ($ci as $data) {
    if (!$ci->hasNext()) {
         // last element
    }
 }
 ?>

WNRosenberg · Accepted Answer · 2011-01-28 14:49:47Z

0

Use this code in the loop, right after while ( $loop->have_posts() ) : $loop->the_post();

<?php
$postCount = 0;

// Start of The Loop

if (++$postCount == 1) {
     // FIRST POST
} 

if ($postCount == sizeof($posts)) {
     // LAST POST IN LOOP
}

// End of The Loop
?>

Source:
http://wordpress.org/support/topic/last-post-in-the-loop?replies=4#post-954762

answered Jan 28, 2011 at 14:49

WNRosenberg

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