Second pass at adding key files

site/stackreach/libs/plugins/shared.mb_str_replace.php

@@ -0,0 +1,38 @@
+<?php
+
+if(!function_exists('smarty_mb_str_replace')) {
+  function smarty_mb_str_replace($search, $replace, $subject, &$count=0) { 
+      if (!is_array($search) && is_array($replace)) { 
+          return false; 
+      } 
+      if (is_array($subject)) { 
+          // call mb_replace for each single string in $subject 
+          foreach ($subject as &$string) { 
+              $string = &smarty_mb_str_replace($search, $replace, $string, $c); 
+              $count += $c; 
+          } 
+      } elseif (is_array($search)) { 
+          if (!is_array($replace)) { 
+              foreach ($search as &$string) { 
+                  $subject = smarty_mb_str_replace($string, $replace, $subject, $c); 
+                  $count += $c; 
+              } 
+          } else { 
+              $n = max(count($search), count($replace)); 
+              while ($n--) { 
+                  $subject = smarty_mb_str_replace(current($search), current($replace), $subject, $c); 
+                  $count += $c; 
+                  next($search); 
+                  next($replace); 
+              } 
+          } 
+      } else { 
+          $parts = mb_split(preg_quote($search), $subject); 
+          $count = count($parts)-1; 
+          $subject = implode($replace, $parts); 
+      } 
+      return $subject; 
+  }
+}
+
+?>