Total image widths in while - php

Question

I have some php code which echos the width of a specific image size in WordPress. Currently, if the image width is greater than 80, then it echos "frog"...what I would like it to do is count all of the image widths within my while and if the total of those images are greater than 600 (hypothetical number) then echo "frog". The code I am using looks like (I am using this code within my while):
<?php
$image = wp_get_attachment_image_src (get_post_thumbnail_id($post_id), 'gallery-thumbnail');
list($width) = getimagesize($image[0]);
echo $width;
if( $width > 80 ) {
echo "frog";
}
?>
My while is the basic WordPress standard:
<?php if ( have_posts() ) : while ( have_posts() ) : the_post(); ?>
<!-- some code here -->
<?php endwhile; else: ?>
<!-- some code here -->
<?php endif; ?>
Any ideas?
Thanks, Josh

Answer 1

Part pseudo code/part solution:
$sumOfWidths = 0;
foreach($images as $image)
{
$sumOfWidths = $sumOfWidths + $image['width'];
}
if($sumOfWidths>600)
{
echo 'frog';
}
Simply put the above code loops through each image and adds the image width to the $sumOfWidths variable.
After the foreach loop, has completed, there should be a number in the $sumOfWidths which you can check and then undertake your logic as you see fit.
Have a look at this code snippet to get you started