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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 |
|---|---|
| 1176 | if ( ( $attachment_id = intval( $attachment_id ) ) && $thumb_url = wp_get_attachment_image_src( $attachment_id, 'thumbnail', true ) ) |
| 1177 | $thumb_url = $thumb_url[0]; |
| 1178 | else |
| 1179 | $thumb_url = false; |
| 1180 | |
| 1181 | $post = get_post( $attachment_id ); |
| 1182 | |
| 1183 | $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 ); |
| 1184 | $args = wp_parse_args( $args, $default_args ); |
| 1185 | $args = apply_filters( 'get_media_item_args', $args ); |
| 1186 | extract( $args, EXTR_SKIP ); |
| 1187 | |
| 1188 | $toggle_on = __( 'Show' ); |
| 1189 | $toggle_off = __( 'Hide' ); |
| 1190 | |
| 1191 | $filename = basename( $post->guid ); |
| 1192 | $title = esc_attr( $post->post_title ); |
| 1193 | |
| 1194 | if ( $_tags = get_the_tags( $attachment_id ) ) { |