diff --git a/src/Utility/Utils.php b/src/Utility/Utils.php
new file mode 100644
index 0000000..9f63c24
--- /dev/null
+++ b/src/Utility/Utils.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace App\Utility\Utils;
+
+// src: https://www.php.net/manual/en/function.array-diff.php#91756
+function array_diff_recursive($arr1, $arr2)
+{
+    $outputDiff = [];
+
+    foreach ($arr1 as $key => $value) {
+        //if the key exists in the second array, recursively call this function 
+        //if it is an array, otherwise check if the value is in arr2
+        if (array_key_exists($key, $arr2)) {
+            if (is_array($value)) {
+                $recursiveDiff = array_diff_recursive($value, $arr2[$key]);
+
+                if (count($recursiveDiff)) {
+                    $outputDiff[$key] = $recursiveDiff;
+                }
+            } else if (!in_array($value, $arr2)) {
+                $outputDiff[$key] = $value;
+            }
+        }
+        //if the key is not in the second array, check if the value is in 
+        //the second array (this is a quirk of how array_diff works)
+        else if (!in_array($value, $arr2)) {
+            $outputDiff[$key] = $value;
+        }
+    }
+
+    return $outputDiff;
+}