From 462d545a638f9e7d8d732a3d6a65926beefd59f4 Mon Sep 17 00:00:00 2001
From: Stanislav Malyshev <stas@php.net>
Date: Wed, 21 Feb 2007 03:03:37 +0000
Subject: [PATCH] fix putenv - if there was no previous, remove variable from
 environ

---
 ext/standard/basic_functions.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ext/standard/basic_functions.c b/ext/standard/basic_functions.c
index 0a0009d133..8d6f45005a 100644
--- a/ext/standard/basic_functions.c
+++ b/ext/standard/basic_functions.c
@@ -3851,6 +3851,10 @@ static void php_putenv_destructor(putenv_entry *pe)
 # if HAVE_UNSETENV
 		unsetenv(pe->key);
 # elif defined(PHP_WIN32)
+		char *del_string = emalloc(pe->key_len+2);
+		snprintf(del_string, pe->key_len+2, "%s=", pe->key);
+		putenv(del_string);
+		efree(del_string);
 		SetEnvironmentVariable(pe->key, NULL);
 # else
 		char **env;
-- 
2.50.1