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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 |
|---|---|
| 960 | <?php |
| 961 | } |
| 962 | |
| 963 | function media_upload_type_form($type = 'file', $errors = null, $id = null) { |
| 964 | media_upload_header(); |
| 965 | |
| 966 | $post_id = intval($_REQUEST['post_id']); |
| 967 | |
| 968 | $form_action_url = admin_url("media-upload.php?type=$type&tab=type&post_id=$post_id"); |
| 969 | $form_action_url = apply_filters('media_upload_form_url', $form_action_url, $type); |
| 970 | |
| 971 | $callback = "type_form_$type"; |
| 972 | ?> |
| 973 | |
| 974 | <form enctype="multipart/form-data" method="post" action="<?php echo attribute_escape($form_action_url); ?>" class="media-upload-form type-form validate" id="<?php echo $type; ?>-form"> |
| 975 | <input type="hidden" name="post_id" id="post_id" value="<?php echo (int) $post_id; ?>" /> |
| 976 | <?php wp_nonce_field('media-form'); ?> |
| 977 | <h3><?php _e('From Computer'); ?></h3> |
| 978 | <?php media_upload_form( $errors ); ?> |