post_thumbnail_size │ filter-hook │ WP 2.9.0

Filters the post thumbnail size.

Usage

add_filter( 'post_thumbnail_size', 'wp_kama_post_thumbnail_size_filter', 10, 2 );

/**
 * Function for `post_thumbnail_size` filter-hook.
 * 
 * @param string|int[] $size    Requested image size. Can be any registered image size name, or an array of width and height values in pixels (in that order).
 * @param int          $post_id The post ID.
 *
 * @return string|int[]
 */
function wp_kama_post_thumbnail_size_filter( $size, $post_id ){

	// filter...
	return $size;
}

$size(string|int[])

Requested image size. Can be any registered image size name, or an array of width and height values in pixels (in that order).

$post_id(int)

The post ID.

Changelog

Where the hook is called

$size = apply_filters( 'post_thumbnail_size', $size, $post->ID );

Where the hook is used in WordPress