Resolved #150 added mbstring as depency (always preinstalled anyways)

README.md

@@ -34,12 +34,13 @@ https://www.maniacontrol.com
 ## REQUIREMENTS:
 - MySQL Database
 - PHP 5.4+
-- Needed extensions (on ManiaControl startup you will see if you have them activated):
+- Needed extensions (on ManiaControl startup you will see if you have them installed and activated):
 	- php_mysqli
 	- php_curl
 	- php_xmlrpc (TM only, recommended for SM)
 	- php_zlib
 	- php_zip
+	- php_mbstring
 	
 ### How to report bugs or request features?:
 - Write a mail to bugs(at)maniacontrol(dot)com

core/Utils/SystemUtil.php

@@ -97,6 +97,16 @@ class SystemUtil {
 			Logger::log($message . 'FOUND!');
 		}
 
+		// Check for MBString
+		$message = 'Checking for installed mbstring ... ';
+		if (!extension_loaded('mbstring')) {
+			Logger::log($message . 'NOT FOUND!');
+			Logger::log(" -- You don't have mbstring installed! Check: http://php.net/manual/en/mbstring.setup.php");
+			$success = false;
+		} else {
+			Logger::log($message . 'FOUND!');
+		}
+
 		if (!$success) {
 			// Missing requirements
 			self::quit();