_get_path_to_translation() WP 4.7.0

Gets the path to a translation file for loading a textdomain just in time.

Caches the retrieved results internally.

No Hooks.

Return

String/false. The path to the translation file or false if no translation file was found.

Usage

_get_path_to_translation( $domain, $reset );

$domain(string) (required)

Text domain. Unique identifier for retrieving translated strings.

$reset(true/false)

Whether to reset the internal cache. Used by the switch to locale functionality.
Default: false

Code of get path to translation: wp-includes/l10n.php ^{VER 5.1.1}

<?php
function _get_path_to_translation( $domain, $reset = false ) {
	static $available_translations = array();

	if ( true === $reset ) {
		$available_translations = array();
	}

	if ( ! isset( $available_translations[ $domain ] ) ) {
		$available_translations[ $domain ] = _get_path_to_translation_from_lang_dir( $domain );
	}

	return $available_translations[ $domain ];
}