Check if image size exists

• kkranzo

• April 21, 2021 at 6:59 am

Does the image field return false if a certain image size doesn’t exist?

For example, would the below return false if the image didn’t have the size of ‘hero-large’?

$theImage = get_sub_field(‘hero_image’)[‘sizes’][‘hero-large’];

I want to use that to check if the image exists. If not, then use a different size.

if ($theImage) {
//do nothing
} else {
$theImage = get_sub_field(‘hero_image’)[‘sizes’][‘hero-small’];
}

Would that work?

• John Huebner

• April 22, 2021 at 8:39 am

If the image size does not exist, usually because the original image is smaller then the defined image field then the full size image is returned.

When using wp_get_attachment_image_src() the return arrays 4th element will be true if the image at that size has been resized.

I do not know if this information about the image is returned in the image size details.

Find out

$theImage = get_sub_field('hero_image');
echo '<pre>'; print_r($theImage); echo '</pre>';