Fires before fetching the post thumbnail HTML. Provides “just in time” filtering of all filters in wp_get_attachment_image().

Parameters

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( 2.9.0 ) . .

( int ) $post_id The post ID. . . .

( string ) $post_thumbnail_id The post thumbnail ID. . . .

$size

( string|array ) The post thumbnail size. Image size or array of width and height values (in that order). Default ‘post-thumbnail’. . . .