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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.
This hook occurs 4 times in this file.
| Line | Code |
|---|---|
| 2309 | |
| 2310 | /** |
| 2311 | * Filters the media upload form action URL. |
| 2312 | * |
| 2313 | * @since 2.6.0 |
| 2314 | * |
| 2315 | * @param string $form_action_url The media upload form action URL. |
| 2316 | * @param string $type The type of media. Default 'file'. |
| 2317 | */ |
| 2318 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2319 | $form_class = 'media-upload-form type-form validate'; |
| 2320 | |
| 2321 | if ( get_user_setting( 'uploader' ) ) { |
| 2322 | $form_class .= ' html-uploader'; |
| 2323 | } |
| 2324 | |
| 2325 | ?> |
| 2326 | <form enctype="multipart/form-data" method="post" action="<?php echo esc_url( $form_action_url ); ?>" class="<?php echo $form_class; ?>" id="<?php echo $type; ?>-form"> |
| 2327 | <?php submit_button( '', 'hidden', 'save', false ); ?> |
| Line | Code |
| 2378 | $type = 'image'; |
| 2379 | } |
| 2380 | |
| 2381 | media_upload_header(); |
| 2382 | |
| 2383 | $post_id = isset( $_REQUEST['post_id'] ) ? (int) $_REQUEST['post_id'] : 0; |
| 2384 | |
| 2385 | $form_action_url = admin_url( "media-upload.php?type=$type&tab=type&post_id=$post_id" ); |
| 2386 | /** This filter is documented in wp-admin/includes/media.php */ |
| 2387 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2388 | $form_class = 'media-upload-form type-form validate'; |
| 2389 | |
| 2390 | if ( get_user_setting( 'uploader' ) ) { |
| 2391 | $form_class .= ' html-uploader'; |
| 2392 | } |
| 2393 | |
| 2394 | ?> |
| 2395 | <form enctype="multipart/form-data" method="post" action="<?php echo esc_url( $form_action_url ); ?>" class="<?php echo $form_class; ?>" id="<?php echo $type; ?>-form"> |
| 2396 | <input type="hidden" name="post_id" id="post_id" value="<?php echo (int) $post_id; ?>" /> |
| Line | Code |
| 2525 | function media_upload_gallery_form( $errors ) { |
| 2526 | global $redir_tab, $type; |
| 2527 | |
| 2528 | $redir_tab = 'gallery'; |
| 2529 | media_upload_header(); |
| 2530 | |
| 2531 | $post_id = (int) $_REQUEST['post_id']; |
| 2532 | $form_action_url = admin_url( "media-upload.php?type=$type&tab=gallery&post_id=$post_id" ); |
| 2533 | /** This filter is documented in wp-admin/includes/media.php */ |
| 2534 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2535 | $form_class = 'media-upload-form validate'; |
| 2536 | |
| 2537 | if ( get_user_setting( 'uploader' ) ) { |
| 2538 | $form_class .= ' html-uploader'; |
| 2539 | } |
| 2540 | |
| 2541 | ?> |
| 2542 | <script type="text/javascript"> |
| 2543 | jQuery(function($){ |
| Line | Code |
| 2688 | function media_upload_library_form( $errors ) { |
| 2689 | global $wpdb, $wp_query, $wp_locale, $type, $tab, $post_mime_types; |
| 2690 | |
| 2691 | media_upload_header(); |
| 2692 | |
| 2693 | $post_id = isset( $_REQUEST['post_id'] ) ? (int) $_REQUEST['post_id'] : 0; |
| 2694 | |
| 2695 | $form_action_url = admin_url( "media-upload.php?type=$type&tab=library&post_id=$post_id" ); |
| 2696 | /** This filter is documented in wp-admin/includes/media.php */ |
| 2697 | $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); |
| 2698 | $form_class = 'media-upload-form validate'; |
| 2699 | |
| 2700 | if ( get_user_setting( 'uploader' ) ) { |
| 2701 | $form_class .= ' html-uploader'; |
| 2702 | } |
| 2703 | |
| 2704 | $q = $_GET; |
| 2705 | $q['posts_per_page'] = 10; |
| 2706 | $q['paged'] = isset( $q['paged'] ) ? (int) $q['paged'] : 0; |