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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 |
|---|---|
| 1202 | if ( ( $attachment_id = intval( $attachment_id ) ) && $thumb_url = wp_get_attachment_image_src( $attachment_id, 'thumbnail', true ) ) |
| 1203 | $thumb_url = $thumb_url[0]; |
| 1204 | else |
| 1205 | $thumb_url = false; |
| 1206 | |
| 1207 | $post = get_post( $attachment_id ); |
| 1208 | |
| 1209 | $default_args = array( 'errors' => null, 'send' => $post->post_parent ? post_type_supports( get_post_type( $post->post_parent ), 'editor' ) : true, 'delete' => true, 'toggle' => true, 'show_title' => true ); |
| 1210 | $args = wp_parse_args( $args, $default_args ); |
| 1211 | $args = apply_filters( 'get_media_item_args', $args ); |
| 1212 | extract( $args, EXTR_SKIP ); |
| 1213 | |
| 1214 | $toggle_on = __( 'Show' ); |
| 1215 | $toggle_off = __( 'Hide' ); |
| 1216 | |
| 1217 | $filename = esc_html( basename( $post->guid ) ); |
| 1218 | $title = esc_attr( $post->post_title ); |
| 1219 | |
| 1220 | if ( $_tags = get_the_tags( $attachment_id ) ) { |