From 0a755cedaee148fdd81686b5e125d0db1843017c Mon Sep 17 00:00:00 2001
From: Steve Kamerman <stevekamerman@gmail.com>
Date: Wed, 22 May 2013 15:17:54 -0400
Subject: [PATCH] array_walk doesn't alter keys, fixed

---
 PHPCI/Builder.php | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/PHPCI/Builder.php b/PHPCI/Builder.php
index 2043531f..a7b60bc1 100644
--- a/PHPCI/Builder.php
+++ b/PHPCI/Builder.php
@@ -263,10 +263,11 @@ class Builder
      */
     public function interpolate($input)
     {
-        $translations = array_walk($this->getInterpolationVars(), function($value, &$key) {
-            $key = '%'.$key.'%';
-        });
-        return strtr($input, $translations);
+        $trans_table = array();
+        foreach ($this->getInterpolationVars() as $key => $value) {
+            $trans_table['%'.$key.'%'] = $value;
+        }
+        return strtr($input, $trans_table);
     }
 
     /**