filter wp_content_img_tag runs multiple times

[gigito78]

Filter wp_content_img_tag seem (in a block theme) seem to run 3 times on content images and 2 times on custom logo image. Simple code to expose the problem:

add_filter( $hook_name='wp_content_img_tag', function( $filtered_image, $context, $attachment_id ){ return 'a:'.$filtered_image; },$priority=21, $accepted_args=3 );

[ocean90]

Hello @gigito78, welcome to WordPress Trac!

I haven't verified this yet, but this seems to be related to #55996.

[ironprogrammer]

Welcome to Trac, and thank you for the report, @gigito78!

Would you be able to include test instructions on where/how the filter is applied, and how it quantifies/proves the repeated calls to wp_content_img_tag? This will help other contributors reproduce the issue condition.

[gigito78]

Hello @ironprogrammer!

Tried to setup a site to help you to reproduce the problem:

1. ​https://www.gigitopcinformatica.it/test4/hello-world/

theme active: wordpress twenty-twentytwo, inserted in function.php the code:

add_filter( $hook_name='wp_content_img_tag', function( $filtered_image, $context, $attachment_id ){ 	
	
$timestamp_mediapost = get_post_modified_time( $format='U', $gmt=true, $post=$attachment_id, $translate=false );	
$filtered_image = str_replace( $search='.webp', $replace='.webp?='.$timestamp_mediapost, $subject=$filtered_image, $count);
echo $count.'-';
	
return $filtered_image; },$priority=21, $accepted_args=3 );

Objective: add query strings to webp files. Please use console to look at filtered images code ad look to the top the echoed $count parameter. Seem that the order is: custom logo image, then content image, then custom logo image again, the, content image again.