Update 'classes/userinfluence.class.php'

change rank to influence (RANK is a reserved word in mysql 8.0)

classes/userrank.class.php → classes/userinfluence.class.php

 <?
-class UserRank {
+class UserInfluence {
   const PREFIX = 'percentiles_'; // Prefix for memcache keys, to make life easier
 
   // Returns a 101 row array (101 percentiles - 0 - 100), with the minimum value for that percentile as the value for each row
     return $Query;
   }
 
-  public static function get_rank($TableName, $Value) {
+  public static function get_influence($TableName, $Value) {
     if ($Value == 0) {
       return 0;
     }