WP hooks navigation: Home/browse • Actions index • Filters index
To save our bandwidth, we show only a snippet of code around each occurence of the hook. View complete file in SVN (without highlighting).
The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )apply_filters( "hook_name", "what_to_filter" ).Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
| Line | Code |
|---|---|
| 92 | if ( $post_thumbnail_id ) { |
| 93 | do_action( 'begin_fetch_post_thumbnail_html', $post_id, $post_thumbnail_id, $size ); // for "Just In Time" filtering of all of wp_get_attachment_image()'s filters |
| 94 | if ( in_the_loop() ) |
| 95 | update_post_thumbnail_cache(); |
| 96 | $html = wp_get_attachment_image( $post_thumbnail_id, $size, false, $attr ); |
| 97 | do_action( 'end_fetch_post_thumbnail_html', $post_id, $post_thumbnail_id, $size ); |
| 98 | } else { |
| 99 | $html = ''; |
| 100 | } |
| 101 | return apply_filters( 'post_thumbnail_html', $html, $post_id, $post_thumbnail_id, $size, $attr ); |
| 102 | } |
| 103 | |
| 104 | ?> |
| 105 | |