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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 |
|---|---|
| 324 | /** |
| 325 | * Filter the current theme directory URI. |
| 326 | * |
| 327 | * @since 1.5.0 |
| 328 | * |
| 329 | * @param string $template_dir_uri The URI of the current theme directory. |
| 330 | * @param string $template Directory name of the current theme. |
| 331 | * @param string $theme_root_uri The themes root URI. |
| 332 | */ |
| 333 | return apply_filters( 'template_directory_uri', $template_dir_uri, $template, $theme_root_uri ); |
| 334 | } |
| 335 | |
| 336 | /** |
| 337 | * Retrieve theme roots. |
| 338 | * |
| 339 | * @since 2.9.0 |
| 340 | * |
| 341 | * @return array|string An array of theme roots keyed by template/stylesheet or a single theme root if all themes have the same root. |
| 342 | */ |