Twig session(key) function + reworked session functions to accept multi-array like in Laravel

Important: getSession returns NULL now instead of false if session value not found

CHANGELOG.md

@@ -1,5 +1,10 @@
 # Changelog
 
+## [master - 02.02.2025]
+
+### Added
+* Twig session(key) function + reworked session functions to accept multi-array like in Laravel
+
 ## [1.1 - 27.01.2025]
 
 ### Changed

system/functions.php

@@ -1057,17 +1057,36 @@ function get_browser_real_ip() {
 
 	return '0';
 }
-function setSession($key, $data): void {
+function setSession($key, $value = null): void {
-	$_SESSION[setting('core.session_prefix') . $key] = $data;
+	if (!is_array($key)) {
+		$key = [$key => $value];
+	}
+
+	foreach ($key as $arrayKey => $arrayValue) {
+		if (is_null($arrayValue)) {
+			unsetSession($arrayKey);
+		}
+		else {
+			$_SESSION[setting('core.session_prefix') . $arrayKey] = $arrayValue;
+		}
+	}
 }
 function getSession($key) {
-	$key = setting('core.session_prefix') . $key;
+	return $_SESSION[setting('core.session_prefix') . $key] ?? null;
-	return $_SESSION[$key] ?? false;
 }
 function unsetSession($key): void {
 	unset($_SESSION[setting('core.session_prefix') . $key]);
 }
 
+function session($key): mixed {
+	if (is_array($key)) {
+		setSession($key);
+		return null;
+	}
+
+	return getSession($key);
+}
+
 function csrf(bool $return = false): string {
 	return CsrfToken::create($return);
 }

system/login.php

@@ -14,12 +14,12 @@ $account_logged = new OTS_Account();
 
 // stay-logged with sessions
 $current_session = getSession('account');
-if($current_session !== false)
+if($current_session)
 {
 	$account_logged->load($current_session);
 	if($account_logged->isLoaded() && $account_logged->getPassword() == getSession('password')
 		//&& (!isset($_SESSION['admin']) || admin())
-		&& (getSession('remember_me') !== false || getSession('last_visit') > time() - 15 * 60)) {  // login for 15 minutes if "remember me" is not used
+		&& (getSession('remember_me') || getSession('last_visit') > time() - 15 * 60)) {  // login for 15 minutes if "remember me" is not used
 			$logged = true;
 	}
 	else {

system/template.php

@@ -41,7 +41,7 @@ if(setting('core.template_allow_change'))
 	}
 	else {
 		$template_session = getSession('template');
-		if ($template_session !== false) {
+		if ($template_session) {
 			if (!preg_match("/[^A-z0-9_\-]/", $template_session)) {
 				$template_name = $template_session;
 			}

system/twig.php

@@ -140,6 +140,11 @@ $function = new TwigFunction('csrfToken', function () {
 });
 $twig->addFunction($function);
 
+$function = new TwigFunction('session', function ($key) {
+	return session($key);
+});
+$twig->addFunction($function);
+
 $filter = new TwigFilter('urlencode', function ($s) {
 	return urlencode($s);
 });