Try changing some data names around

servertime.php

@@ -3,12 +3,12 @@
 // Server Time API Module
 
 // Process client requested data
-$server = $_POST['server'];
+$data['server'] = $_POST['server'];
 
-echo $server; //debug test
+echo $data['server']; //debug test
 
 // If client requested datetime for Rocknarok Universe (General Timezone).
-if ($server='ru-general') {
+if ($data['server']='ru-general') {
 
 // Set current datetime of Rocknarok Universe.
 $rutime=date_create();