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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 |
|---|---|
| 124 | * @uses apply_filters() Calls 'template_directory' filter on template directory path and template name. |
| 125 | * |
| 126 | * @return string Template directory path. |
| 127 | */ |
| 128 | function get_template_directory() { |
| 129 | $template = get_template(); |
| 130 | $theme_root = get_theme_root( $template ); |
| 131 | $template_dir = "$theme_root/$template"; |
| 132 | |
| 133 | return apply_filters( 'template_directory', $template_dir, $template, $theme_root ); |
| 134 | } |
| 135 | |
| 136 | /** |
| 137 | * Retrieve theme directory URI. |
| 138 | * |
| 139 | * @since 1.5.0 |
| 140 | * @uses apply_filters() Calls 'template_directory_uri' filter on template directory URI path and template name. |
| 141 | * |
| 142 | * @return string Template directory URI. |