get_theme_root() WP 1.0

Retrieve path to themes directory.

Does not have trailing slash.

Return

String. Themes directory path.

Usage

get_theme_root( $stylesheet_or_template );

$stylesheet_or_template(string)

The stylesheet or template name of the theme.
Default: to leverage the main theme root

Notes

• Global. Array. $wp_theme_directories

Changelog

Code of get theme root: wp-includes/theme.php ^{WP 5.4.1}

<?php
function get_theme_root( $stylesheet_or_template = '' ) {
	global $wp_theme_directories;

	$theme_root = '';

	if ( $stylesheet_or_template ) {
		$theme_root = get_raw_theme_root( $stylesheet_or_template );
		if ( $theme_root ) {
			// Always prepend WP_CONTENT_DIR unless the root currently registered as a theme directory.
			// This gives relative theme roots the benefit of the doubt when things go haywire.
			if ( ! in_array( $theme_root, (array) $wp_theme_directories ) ) {
				$theme_root = WP_CONTENT_DIR . $theme_root;
			}
		}
	}

	if ( ! $theme_root ) {
		$theme_root = WP_CONTENT_DIR . '/themes';
	}

	/**
	 * Filters the absolute path to the themes directory.
	 *
	 * @since 1.5.0
	 *
	 * @param string $theme_root Absolute path to themes directory.
	 */
	return apply_filters( 'theme_root', $theme_root );
}

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