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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 |
|---|---|
| 330 | return $html; |
| 331 | } |
| 332 | |
| 333 | add_shortcode('gallery', 'gallery_shortcode'); |
| 334 | |
| 335 | function gallery_shortcode($attr) { |
| 336 | global $post; |
| 337 | |
| 338 | // Allow plugins/themes to override the default gallery template. |
| 339 | $output = apply_filters('post_gallery', '', $attr); |
| 340 | if ( $output != '' ) |
| 341 | return $output; |
| 342 | |
| 343 | extract(shortcode_atts(array( |
| 344 | 'orderby' => 'menu_order ASC, ID ASC', |
| 345 | 'id' => $post->ID, |
| 346 | 'itemtag' => 'dl', |
| 347 | 'icontag' => 'dt', |
| 348 | 'captiontag' => 'dd', |