diff -up php-5.2.17/ext/standard/array.c.bug-48484 php-5.2.17/ext/standard/array.c
--- php-5.2.17/ext/standard/array.c.bug-48484	2010-11-20 04:06:44.000000000 +0600
+++ php-5.2.17/ext/standard/array.c	2011-08-28 00:21:52.000000000 +0700
@@ -4368,11 +4368,11 @@ PHP_FUNCTION(array_product)
 		php_error_docref(NULL TSRMLS_CC, E_WARNING, "The argument should be an array");
 		return;
 	}
-	
+
+	ZVAL_LONG(return_value, 1);
 	if (!zend_hash_num_elements(Z_ARRVAL_PP(input))) {
-		RETURN_LONG(0);
+		return;
 	}
-	ZVAL_LONG(return_value, 1);
 
 	for (zend_hash_internal_pointer_reset_ex(Z_ARRVAL_PP(input), &pos);
 		 zend_hash_get_current_data_ex(Z_ARRVAL_PP(input), (void **)&entry, &pos) == SUCCESS;