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-rw-r--r--ext/standard/basic_functions.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/ext/standard/basic_functions.c b/ext/standard/basic_functions.c
index 97787488b6..fdacba2491 100644
--- a/ext/standard/basic_functions.c
+++ b/ext/standard/basic_functions.c
@@ -3404,6 +3404,9 @@ static void php_putenv_destructor(putenv_entry *pe) /* {{{ */
unsetenv(pe->key);
# elif defined(PHP_WIN32)
SetEnvironmentVariable(pe->key, NULL);
+# ifndef ZTS
+ _putenv_s(pe->key, "");
+# endif
# else
char **env;