From 7e01c518b6a504846f397b787ab285105531d562 Mon Sep 17 00:00:00 2001
From: Xinchen Hui <laruence@gmail.com>
Date: Fri, 15 Apr 2016 21:29:27 -0700
Subject: [PATCH] Fixed bug #72028 (pg_query_params(): NULL converts to empty
 string)

I don't have a pgsql server by hand, so no test script, but the fix must
be right.
---
 NEWS              | 2 ++
 ext/pgsql/pgsql.c | 2 +-
 2 files changed, 3 insertions(+), 1 deletion(-)

diff --git a/NEWS b/NEWS
index 20821fe0c0..493c6361d3 100644
--- a/NEWS
+++ b/NEWS
@@ -11,6 +11,8 @@ PHP                                                                        NEWS
     leads to fatal error). (Laruence)
 
 - Postgres:
+  . Fixed bug #72028 (pg_query_params(): NULL converts to empty string).
+    (Laruence)
   . Fixed bug #71062 (pg_convert() doesn't accept ISO 8601 for datatype
     timestamp). (denver at timothy dot io)
 
diff --git a/ext/pgsql/pgsql.c b/ext/pgsql/pgsql.c
index 84a443e1b0..c22a23eb02 100644
--- a/ext/pgsql/pgsql.c
+++ b/ext/pgsql/pgsql.c
@@ -1968,7 +1968,7 @@ PHP_FUNCTION(pg_query_params)
 		params = (char **)safe_emalloc(sizeof(char *), num_params, 0);
 
 		ZEND_HASH_FOREACH_VAL(Z_ARRVAL_P(pv_param_arr), tmp) {
-
+			ZVAL_DEREF(tmp);
 			if (Z_TYPE_P(tmp) == IS_NULL) {
 				params[i] = NULL;
 			} else {
-- 
2.40.0