wp_load_translations_early() WordPress Function

function wp_load_translations_early() {
	global $wp_locale;

	static $loaded = false;
	if ( $loaded ) {
		return;
	}
	$loaded = true;

	if ( function_exists( 'did_action' ) && did_action( 'init' ) ) {
		return;
	}

	// We need $wp_local_package.
	require ABSPATH . WPINC . '/version.php';

	// Translation and localization.
	require_once ABSPATH . WPINC . '/pomo/mo.php';
	require_once ABSPATH . WPINC . '/l10n.php';
	require_once ABSPATH . WPINC . '/class-wp-locale.php';
	require_once ABSPATH . WPINC . '/class-wp-locale-switcher.php';

	// General libraries.
	require_once ABSPATH . WPINC . '/plugin.php';

	$locales   = array();
	$locations = array();

	while ( true ) {
		if ( defined( 'WPLANG' ) ) {
			if ( '' === WPLANG ) {
				break;
			}
			$locales[] = WPLANG;
		}

		if ( isset( $wp_local_package ) ) {
			$locales[] = $wp_local_package;
		}

		if ( ! $locales ) {
			break;
		}

		if ( defined( 'WP_LANG_DIR' ) && @is_dir( WP_LANG_DIR ) ) {
			$locations[] = WP_LANG_DIR;
		}

		if ( defined( 'WP_CONTENT_DIR' ) && @is_dir( WP_CONTENT_DIR . '/languages' ) ) {
			$locations[] = WP_CONTENT_DIR . '/languages';
		}

		if ( @is_dir( ABSPATH . 'wp-content/languages' ) ) {
			$locations[] = ABSPATH . 'wp-content/languages';
		}

		if ( @is_dir( ABSPATH . WPINC . '/languages' ) ) {
			$locations[] = ABSPATH . WPINC . '/languages';
		}

		if ( ! $locations ) {
			break;
		}

		$locations = array_unique( $locations );

		foreach ( $locales as $locale ) {
			foreach ( $locations as $location ) {
				if ( file_exists( $location . '/' . $locale . '.mo' ) ) {
					load_textdomain( 'default', $location . '/' . $locale . '.mo' );
					if ( defined( 'WP_SETUP_CONFIG' ) && file_exists( $location . '/admin-' . $locale . '.mo' ) ) {
						load_textdomain( 'default', $location . '/admin-' . $locale . '.mo' );
					}
					break 2;
				}
			}
		}

		break;
	}

	$wp_locale = new WP_Locale();
}
Uses	Description
wp-includes/l10n.php:load_textdomain()	Load a .mo file into the text domain $domain.
wp-includes/class-wp-locale.php:WP_Locale::__construct()	Constructor which calls helper methods to set up object variables.
wp-includes/plugin.php:did_action()	Retrieves the number of times an action has been fired during the current request.
Used By	Description
wp-includes/class-wp-fatal-error-handler.php:WP_Fatal_Error_Handler::display_default_error_template()	Displays the default PHP error template.
wp-includes/wp-db.php:wpdb::process_fields()	Processes arrays of field/value pairs and field formats.
wp-includes/load.php:wp_check_php_mysql_versions()	Check for the required PHP version, and the MySQL extension or a database drop-in.
wp-includes/load.php:wp_maintenance()	Die with a maintenance message when conditions are met.
wp-includes/load.php:wp_set_wpdb_vars()	Set the database table prefix and the format specifiers for database table columns.
wp-includes/functions.php:dead_db()	Load custom DB error or display WordPress DB error.
wp-includes/functions.php:is_blog_installed()	Determines whether WordPress is already installed.
wp-includes/ms-load.php:ms_not_installed()	Displays a failure message.
wp-includes/wp-db.php:wpdb::check_connection()	Checks that the connection to the database is still up. If not, try to reconnect.
wp-includes/wp-db.php:wpdb::query()	Performs a database query, using current database connection.
wp-includes/wp-db.php:wpdb::select()	Selects a database using the current or provided database connection.
wp-includes/wp-db.php:wpdb::_real_escape()	Real escape, using mysqli_real_escape_string() or mysql_real_escape_string().
wp-includes/wp-db.php:wpdb::prepare()	Prepares a SQL query for safe execution.
wp-includes/wp-db.php:wpdb::print_error()	Prints SQL/DB error.
wp-includes/wp-db.php:wpdb::db_connect()	Connects to and selects database.