Conditional Implode statement for gallery in WP Gallery

• Prometheus Fire

• August 25, 2015 at 7:58 am

I’m displaying images from a gallery field in a WP Gallery using the snippet from the knowledgebase here http://www.advancedcustomfields.com/resources/gallery/#template-usage

However, when there are no images added to the gallery field it throws an error:
Warning: implode() [function.implode]: Invalid arguments passed

Is there a way to modify the code below so that if there are no images it fails gracefully?

<?php 
$image_ids = get_field('gallery', false, false);
$shortcode = '[gallery ids="' . implode(',', $image_ids) . '"]';
echo do_shortcode( $shortcode );
?>

• John Huebner

• August 25, 2015 at 8:42 am

You need to add a conditional statement around your code so that it is not called if there are no images.

<?php 
$image_ids = get_field('gallery', false, false);
if (is_array($image_ids)) {
    $shortcode = '[gallery ids="' . implode(',', $image_ids) . '"]';
    echo do_shortcode( $shortcode );
}
?>

• Prometheus Fire

• September 1, 2015 at 3:17 am

Thank you, this was perfect. Exactly what I needed!