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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 |
|---|---|
| 567 | $q['cat'] = (int) $q['cat']; |
| 568 | $q['post_type'] = 'attachment'; |
| 569 | $q['post_status'] = 'any'; |
| 570 | $q['posts_per_page'] = 15; |
| 571 | $post_mime_types = array( // array( adj, noun ) |
| 572 | 'image' => array(__('Images'), __('Manage Images'), __ngettext_noop('Image (%s)', 'Images (%s)')), |
| 573 | 'audio' => array(__('Audio'), __('Manage Audio'), __ngettext_noop('Audio (%s)', 'Audio (%s)')), |
| 574 | 'video' => array(__('Video'), __('Manage Video'), __ngettext_noop('Video (%s)', 'Video (%s)')), |
| 575 | ); |
| 576 | $post_mime_types = apply_filters('post_mime_types', $post_mime_types); |
| 577 | |
| 578 | $avail_post_mime_types = get_available_post_mime_types('attachment'); |
| 579 | |
| 580 | if ( isset($q['post_mime_type']) && !array_intersect( (array) $q['post_mime_type'], array_keys($post_mime_types) ) ) |
| 581 | unset($q['post_mime_type']); |
| 582 | |
| 583 | wp($q); |
| 584 | |
| 585 | return array($post_mime_types, $avail_post_mime_types); |