switch_to_user_locale( int $user_id )

Switches the translations according to the given user’s locale.

Parameters

$user_id

(Required) User ID.

Return

(bool) True on success, false on failure.

Source

File: wp-includes/l10n.php 

function switch_to_user_locale( $user_id ) {
	/* @var WP_Locale_Switcher $wp_locale_switcher */
	global $wp_locale_switcher;

	if ( ! $wp_locale_switcher ) {
		return false;
	}

	return $wp_locale_switcher->switch_to_user_locale( $user_id );
}

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Changelog

Changelog
Version Description
6.2.0 Introduced.