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get_parent_theme_file_path( string $file = '' )

Retrieves the path of a file in the parent theme.

Parameters

$file

(string) (Optional) File to return the path for in the template directory.

Default value: ''

Return

(string) The path of the file.

Source

File: wp-includes/link-template.php 

function get_parent_theme_file_path( $file = '' ) {
	$file = ltrim( $file, '/' );

	if ( empty( $file ) ) {
		$path = get_template_directory();
	} else {
		$path = get_template_directory() . '/' . $file;
	}

	/**
	 * Filters the path to a file in the parent theme.
	 *
	 * @since 4.7.0
	 *
	 * @param string $path The file path.
	 * @param string $file The requested file to search for.
	 */
	return apply_filters( 'parent_theme_file_path', $path, $file );
}

Uses

Uses Description
wp-includes/link-template.php: parent_theme_file_path

Filters the path to a file in the parent theme.
wp-includes/theme.php: get_template_directory()

Retrieves template directory path for current theme.
wp-includes/plugin.php: apply_filters()

Calls the callback functions that have been added to a filter hook.

Changelog

Version Description
4.7.0 Introduced.

© 2003–2019 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/functions/get_parent_theme_file_path