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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 2 times in this file.
| Line | Code |
|---|---|
| 1391 | * @param unknown_type $errors |
| 1392 | * @param unknown_type $id |
| 1393 | */ |
| 1394 | function media_upload_type_form($type = 'file', $errors = null, $id = null) { |
| 1395 | media_upload_header(); |
| 1396 | |
| 1397 | $post_id = intval($_REQUEST['post_id']); |
| 1398 | |
| 1399 | $form_action_url = admin_url("media-upload.php?type=$type&tab=type&post_id=$post_id"); |
| 1400 | $form_action_url = apply_filters('media_upload_form_url', $form_action_url, $type); |
| 1401 | ?> |
| 1402 | |
| 1403 | <form enctype="multipart/form-data" method="post" action="<?php echo esc_attr($form_action_url); ?>" class="media-upload-form type-form validate" id="<?php echo $type; ?>-form"> |
| 1404 | <input type="hidden" name="post_id" id="post_id" value="<?php echo (int) $post_id; ?>" /> |
| 1405 | <?php wp_nonce_field('media-form'); ?> |
| 1406 | |
| 1407 | <h3 class="media-title"><?php _e('Add media files from your computer'); ?></h3> |
| 1408 | |
| 1409 | <?php media_upload_form( $errors ); ?> |
| Line | Code |
| 1447 | * @param unknown_type $errors |
| 1448 | * @param unknown_type $id |
| 1449 | */ |
| 1450 | function media_upload_type_url_form($type = 'file', $errors = null, $id = null) { |
| 1451 | media_upload_header(); |
| 1452 | |
| 1453 | $post_id = intval($_REQUEST['post_id']); |
| 1454 | |
| 1455 | $form_action_url = admin_url("media-upload.php?type=$type&tab=type&post_id=$post_id"); |
| 1456 | $form_action_url = apply_filters('media_upload_form_url', $form_action_url, $type); |
| 1457 | |
| 1458 | $callback = "type_url_form_$type"; |
| 1459 | ?> |
| 1460 | |
| 1461 | <form enctype="multipart/form-data" method="post" action="<?php echo esc_attr($form_action_url); ?>" class="media-upload-form type-form validate" id="<?php echo $type; ?>-form"> |
| 1462 | <input type="hidden" name="post_id" id="post_id" value="<?php echo (int) $post_id; ?>" /> |
| 1463 | <?php wp_nonce_field('media-form'); ?> |
| 1464 | |
| 1465 | <?php if ( is_callable($callback) ) { ?> |