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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 |
|---|---|
| 180 | <input name="referredby" type="hidden" id="referredby" value="<?php |
| 181 | if ( !empty($_REQUEST['popupurl']) ) |
| 182 | echo clean_url(stripslashes($_REQUEST['popupurl'])); |
| 183 | else if ( url_to_postid(wp_get_referer()) == $post_ID ) |
| 184 | echo 'redo'; |
| 185 | else |
| 186 | echo clean_url(stripslashes(wp_get_referer())); |
| 187 | ?>" /></p> |
| 188 | |
| 189 | <?php do_action('edit_form_advanced'); ?> |
| 190 | |
| 191 | <?php |
| 192 | if (current_user_can('upload_files')) { |
| 193 | $uploading_iframe_ID = (int) (0 == $post_ID ? $temp_ID : $post_ID); |
| 194 | $uploading_iframe_src = wp_nonce_url("upload.php?style=inline&tab=upload&post_id=$uploading_iframe_ID", 'inlineuploading'); |
| 195 | $uploading_iframe_src = apply_filters('uploading_iframe_src', $uploading_iframe_src); |
| 196 | if ( false != $uploading_iframe_src ) |
| 197 | echo '<iframe id="uploading" name="uploading" frameborder="0" src="' . $uploading_iframe_src . '">' . __('This feature requires iframe support.') . '</iframe>'; |
| 198 | } |