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post_thumbnail_url filter
Filters the post thumbnail URL.
apply_filters( 'post_thumbnail_url', string|false $thumbnail_url, int|WP_Post|null $post, string|int[] $size )
Description
This is filter hook , its filter the post thumbnail URL.
Its consists of three parameters, one is $thumbnail_url, second is Post Id or Post object and third for $size .
It is used in get_the_post_thumbnail() which returns post thumbnail URL.
Parameters
- $thumbnail_url : (string|false) Post thumbnail URL or false if the post does not exist.
- $post : (int|WP_Post|null) Post ID or WP_Post object. Default is global $post.
- $size : (string|int[]) Registered image size to retrieve the source for or a flat array of height and width dimensions. Default ‘post-thumbnail’.
Live Example
To run the hook, copy the example below.
apply_filters( 'post_thumbnail_url', string|false $thumbnail_url, int|WP_Post|null $post, string|int[] $size )
The following example is for adding a hook callback.
// define the post_thumbnail_url callback function filter_post_thumbnail_url( $thumbnail_url , $post, $size) { // make filter magic happen here... return $thumbnail_url; }; // add the filter add_filter( 'post_thumbnail_url', 'filter_post_thumbnail_url', 10, 1 );
To remove a hook callback, use the example below.
// remove the filter remove_filter( 'post_thumbnail_url', 'filter_post_thumbnail_url', 10, 1 );
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