Jamie Jamie - 1 month ago 8
PHP Question

How do I add a class to every nth item in a php loop (wordpress)

I have a Wordpress loop as follows:

<?php $loop = new WP_Query( array( 'post_type' => 'portfolio' ) ); ?>
<?php while ( $loop->have_posts() ) : $loop->the_post(); ?>
<div class="four columns">
<?php the_content(); //along with other stuff in looped div ?>
</div>
<?php endwhile ?>


How can I add an 'alpha' class to every (4n-3)th div (div.four.columns) and an 'omega' class to every (4n)th item using php?

Thanks (a lot!),
Jamie

Answer

Why not add a counter and use the modulus approach to get to know in every column what element you are currently echoing.

Lets say you have 4 columns as specified.
You start with counter = 1
1 % 4 = 1 ( you are in the first element )
2 % 4 = 2 ( you are in the second element )
3 % 4 = 3 ( you are in the third element )
4 % 4 = 0 ( you are in the fourth element )
5 % 4 = 1 ( you are in the first element )
6 % 4 = 2 ( you are in the second element )

And you just use an If statement with the class as following

<?php $counter = 1 ?>
<?php $loop = new WP_Query( array( 'post_type' => 'portfolio' ) ); ?>
    <?php while ( $loop->have_posts() ) : $loop->the_post(); ?>
    <div class="four columns <?php if ($counter % 4 == 1){echo 'alpha'}else if ($counter % 4 == 0){echo 'omega'} ?>">
        <?php the_content(); //along with other stuff in looped div ?>
    </div>
<?php $counter++ ; 
endwhile ?>
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