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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 |
|---|---|
| 50 | * This hook also applies to various types of files loaded as part of the Template Hierarchy. |
| 51 | * |
| 52 | * Possible values for `$type` include: 'index', '404', 'archive', 'author', 'category', 'tag', 'taxonomy', 'date', |
| 53 | * 'embed', home', 'frontpage', 'page', 'paged', 'search', 'single', 'singular', and 'attachment'. |
| 54 | * |
| 55 | * @since 1.5.0 |
| 56 | * |
| 57 | * @param string $template Path to the template. See locate_template(). |
| 58 | */ |
| 59 | return apply_filters( "{$type}_template", $template ); |
| 60 | } |
| 61 | |
| 62 | /** |
| 63 | * Retrieve path of index template in current or parent template. |
| 64 | * |
| 65 | * The template hierarchy is filterable via the {@see 'index_template_hierarchy'} hook. |
| 66 | * The template path is filterable via the {@see 'index_template'} hook. |
| 67 | * |
| 68 | * @since 3.0.0 |