Foreach vs While

Igor Liferenko · Jan 7, 2017

Hey Guys,
I want to use Foreach or While to show results on a page them of Wordpress, but i don't know which command I should use and what is the advantage between them? When I should use Foreach or While
I am wanting to display a list of records from database and I often use while function in PHP sites but for wordpress, I am not sure which one should be used is the best.

RDO Servers · Jan 7, 2017

'Foreach' is typically used to do a task, for each record in a database, data table, array, etc.

'While' is used to run a section of code while a variable is 'true'.

energizedit · Jan 8, 2017

RDO has given the best description of the two. Here are some examples. Most likely you will want to use foreach. That would be used when you have a set of data like an array, an array returned from a database, like in wordpress.

While, would be used to test a variable until something is true. Like, while

Code:

while($x <= 5) {
    echo "The number is: $x <br>";
    $x++;
}

Igor Liferenko · Jan 8, 2017

RDO Servers said:
'Foreach' is typically used to do a task, for each record in a database, data table, array, etc.

'While' is used to run a section of code while a variable is 'true'.

Exactly I used while to run a section of code to display records from database as my example below.

energizedit said:
RDO has given the best description of the two. Here are some examples. Most likely you will want to use foreach. That would be used when you have a set of data like an array, an array returned from a database, like in wordpress.

While, would be used to test a variable until something is true. Like, while

Code:

while($x <= 5) { echo "The number is: $x <br>"; $x++; }

Thanks for your advices and yes I used to see Wordpress used foreach on their codes but when I make custom codes i often go with while, this seems more better and helping more.
for example, this is a custom code that used to create a list of videos categories with custom design on my WP site.

Code:

<?php 
while (have_posts()) :
the_post(); 					
?>	
<div class="showcatevid">
	<div class="indevideos">
			<a href="<?php the_permalink(); ?>">
				<?php if (has_post_thumbnail( $post->ID ) ): ?>
				<?php $image = wp_get_attachment_image_src( get_post_thumbnail_id( $post->ID ), 'post-thumbnails' ); ?><img src="<?php echo $image[0]; ?>">
				<?php else : ?>
				<img src="<? bloginfo('template_directory');?>/images/defaultthumbnail.jpg">
				<?php endif; ?>
			</a>
	<h3><a href="<?php the_permalink();?>" title="<?php the_title();?>"><?php the_title();?></a></h3>
    by <span class="spblu"><?php the_author();?></span><br />
    <?php echo $post->post_view;?> views<br />
	</div>
</div>
<?php			
endwhile;
wp_reset_query();
?>

Foreach vs While

Igor Liferenko

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RDO Servers

Well-known member

energizedit

Well-known member

Igor Liferenko

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