get_usermeta( int $user_id, string $meta_key = '' ): mixed

2277function get_usermeta( $user_id, $meta_key = '' ) {2278	_deprecated_function( __FUNCTION__, '3.0.0', 'get_user_meta()' );2279	global $wpdb;2280	$user_id = (int) $user_id;2281 2282	if ( !$user_id )2283		return false;2284 2285	if ( !empty($meta_key) ) {2286		$meta_key = preg_replace('|[^a-z0-9_]|i', '', $meta_key);2287		$user = wp_cache_get($user_id, 'users');2288		// Check the cached user object.2289		if ( false !== $user && isset($user->$meta_key) )2290			$metas = array($user->$meta_key);2291		else2292			$metas = $wpdb->get_col( $wpdb->prepare("SELECT meta_value FROM $wpdb->usermeta WHERE user_id = %d AND meta_key = %s", $user_id, $meta_key) );2293	} else {2294		$metas = $wpdb->get_col( $wpdb->prepare("SELECT meta_value FROM $wpdb->usermeta WHERE user_id = %d", $user_id) );2295	}2296 2297	if ( empty($metas) ) {2298		if ( empty($meta_key) )2299			return array();2300		else2301			return '';2302	}2303 2304	$metas = array_map('maybe_unserialize', $metas);2305 2306	if ( count($metas) === 1 )2307		return $metas[0];2308	else2309		return $metas;2310}