diff --git a/php/base/Exchange.php b/php/base/Exchange.php
index <HASH>..<HASH> 100644
--- a/php/base/Exchange.php
+++ b/php/base/Exchange.php
@@ -757,6 +757,10 @@ class Exchange {
         return true;
     }
 
+    public function checkRequiredCredentials($error = true) {
+        return $this->check_required_credentials($error);
+    }
+
     public function check_address($address) {
         if (empty($address) || !is_string($address)) {
             throw new InvalidAddress($this->id . ' address is undefined');
Exchange.php camelCase checkRequiredCredentials