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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 |
|---|---|
| 852 | $templates = array(); |
| 853 | if ( !empty($template) && !validate_file($template) ) |
| 854 | $templates[] = $template; |
| 855 | if ( $pagename ) |
| 856 | $templates[] = "page-$pagename.php"; |
| 857 | if ( $id ) |
| 858 | $templates[] = "page-$id.php"; |
| 859 | $templates[] = "page.php"; |
| 860 | |
| 861 | return apply_filters('page_template', locate_template($templates)); |
| 862 | } |
| 863 | |
| 864 | /** |
| 865 | * Retrieve path of paged template in current or parent template. |
| 866 | * |
| 867 | * @since 1.5.0 |
| 868 | * |
| 869 | * @return string |
| 870 | */ |