Added array_undot() helper

src/helpers.php

@@ -13,3 +13,17 @@ if (! function_exists('is_json')) {
 		return (json_last_error() == JSON_ERROR_NONE);
 	}
 }
+
+// Inverse of array_dot()
+if (! function_exists('array_undot')) {
+	function array_undot($dotNotationArray)
+	{
+		$array = [];
+
+		foreach ($dotNotationArray as $key => $value) {
+			array_set($array, $key, $value);
+		}
+
+		return $array;
+	}
+}