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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 |
|---|---|
| 1 | <?php |
| 2 | /** |
| 3 | * Loads the correct template based on the visitor's url |
| 4 | * @package WordPress |
| 5 | */ |
| 6 | if ( defined('WP_USE_THEMES') && constant('WP_USE_THEMES') ) { |
| 7 | do_action('template_redirect'); |
| 8 | if ( is_robots() ) { |
| 9 | do_action('do_robots'); |
| 10 | return; |
| 11 | } else if ( is_feed() ) { |
| 12 | do_feed(); |
| 13 | return; |
| 14 | } else if ( is_trackback() ) { |
| 15 | include(ABSPATH . 'wp-trackback.php'); |
| 16 | return; |
| 17 | } else if ( is_404() && $template = get_404_template() ) { |
| 18 | include($template); |
| Line | Code |
| 58 | include($template); |
| 59 | return; |
| 60 | } else if ( file_exists(TEMPLATEPATH . "/index.php") ) { |
| 61 | include(TEMPLATEPATH . "/index.php"); |
| 62 | return; |
| 63 | } |
| 64 | } else { |
| 65 | // Process feeds and trackbacks even if not using themes. |
| 66 | if ( is_robots() ) { |
| 67 | do_action('do_robots'); |
| 68 | return; |
| 69 | } else if ( is_feed() ) { |
| 70 | do_feed(); |
| 71 | return; |
| 72 | } else if ( is_trackback() ) { |
| 73 | include(ABSPATH . 'wp-trackback.php'); |
| 74 | return; |
| 75 | } |
| 76 | } |