From 1b7d684d07847367b7f46c7f7b6eb85be9c20cf2 Mon Sep 17 00:00:00 2001
From: "Edward Z. Yang" <ezyang@cs.stanford.edu>
Date: Wed, 4 Jan 2017 14:35:52 -0500
Subject: [PATCH] Remove $a = array($a) which is miscompiled by Zend OpCache.

Fixes #108.

Signed-off-by: Edward Z. Yang <ezyang@cs.stanford.edu>
---
 library/HTMLPurifier/Strategy/MakeWellFormed.php | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/library/HTMLPurifier/Strategy/MakeWellFormed.php b/library/HTMLPurifier/Strategy/MakeWellFormed.php
index e389e001..f027d138 100644
--- a/library/HTMLPurifier/Strategy/MakeWellFormed.php
+++ b/library/HTMLPurifier/Strategy/MakeWellFormed.php
@@ -534,12 +534,17 @@ class HTMLPurifier_Strategy_MakeWellFormed extends HTMLPurifier_Strategy
      */
     protected function processToken($token, $injector = -1)
     {
+        // Zend OpCache miscompiles $token = array($token), so
+        // avoid this pattern.  See: https://github.com/ezyang/htmlpurifier/issues/108
+
         // normalize forms of token
         if (is_object($token)) {
-            $token = array(1, $token);
+            $tmp = $token;
+            $token = array(1, $tmp);
         }
         if (is_int($token)) {
-            $token = array($token);
+            $tmp = $token;
+            $token = array($tmp);
         }
         if ($token === false) {
             $token = array(1);