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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 |
---|---|
685 | if ( $stylesheet_or_template ) { |
686 | if ( $theme_root = get_raw_theme_root($stylesheet_or_template) ) |
687 | $theme_root_uri = content_url( $theme_root ); |
688 | else |
689 | $theme_root_uri = content_url( 'themes' ); |
690 | } else { |
691 | $theme_root_uri = content_url( 'themes' ); |
692 | } |
693 |
|
694 | return apply_filters( 'theme_root_uri', $theme_root_uri, get_option('siteurl'), $stylesheet_or_template ); |
695 | } |
696 |
|
697 | /** |
698 | * Get the raw theme root relative to the content directory with no filters applied. |
699 | * |
700 | * @since 3.1.0 |
701 | * |
702 | * @param string $stylesheet_or_template The stylesheet or template name of the theme |
703 | * @return string Theme root |