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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 | 
|---|---|
| 457 |                     } | 
| 458 |                } | 
| 459 |           } | 
| 460 |  | 
| 461 |           $this->fclose($handle); | 
| 462 |  | 
| 463 |           echo '</ol>'; | 
| 464 |  | 
| 465 |           wp_import_cleanup($this->id); | 
| 466 |           do_action('import_done', 'mt'); | 
| 467 |  | 
| 468 |           echo '<h3>'.sprintf(__('All done. <a href="%s">Have fun!</a>'), get_option('home')).'</h3></div>'; | 
| 469 |      } | 
| 470 |  | 
| 471 |      function import() { | 
| 472 |           $this->id = (int) $_GET['id']; | 
| 473 |           if ( $this->id == 0 ) | 
| 474 |                $this->file = WP_CONTENT_DIR . '/mt-export.txt'; | 
| 475 |           else |