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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 |
|---|---|
| 63 | die ( __('You are not allowed to edit this post.') ); |
| 64 | |
| 65 | $post = get_post_to_edit($post_ID); |
| 66 | |
| 67 | include('edit-form-advanced.php'); |
| 68 | |
| 69 | ?> |
| 70 | <div id='preview' class='wrap'> |
| 71 | <h2 id="preview-post"><?php _e('Post Preview (updated when post is saved)'); ?></h2> |
| 72 | <iframe src="<?php echo attribute_escape(apply_filters('preview_post_link', add_query_arg('preview', 'true', get_permalink($post->ID)))); ?>" width="100%" height="600" ></iframe> |
| 73 | </div> |
| 74 | <?php |
| 75 | break; |
| 76 | |
| 77 | case 'editattachment': |
| 78 | $post_id = (int) $_POST['post_ID']; |
| 79 | |
| 80 | check_admin_referer('update-attachment_' . $post_id); |
| 81 | |