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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 |
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265 | * @uses apply_filters() Calls 'template_directory_uri' filter on template directory URI path and template name. |
266 | * |
267 | * @return string Template directory URI. |
268 | */ |
269 | function get_template_directory_uri() { |
270 | $template = get_template(); |
271 | $theme_root_uri = get_theme_root_uri( $template ); |
272 | $template_dir_uri = "$theme_root_uri/$template"; |
273 |
|
274 | return apply_filters( 'template_directory_uri', $template_dir_uri, $template, $theme_root_uri ); |
275 | } |
276 |
|
277 | /** |
278 | * Retrieve theme roots. |
279 | * |
280 | * @since 2.9.0 |
281 | * |
282 | * @return array|string An array of theme roots keyed by template/stylesheet or a single theme root if all themes have the same root. |
283 | */ |