From bcee34c649c7a26bebf282ca94e08ef06b882017 Mon Sep 17 00:00:00 2001
From: Adam Baratz <adambaratz@php.net>
Date: Tue, 13 Sep 2016 17:01:51 -0400
Subject: [PATCH] Add special case for earlier versions of TDS

---
 ext/pdo/tests/pdo_018.phpt | 17 ++++++++++++++---
 1 file changed, 14 insertions(+), 3 deletions(-)

diff --git a/ext/pdo/tests/pdo_018.phpt b/ext/pdo/tests/pdo_018.phpt
index d931a2c1c07..80e34532872 100644
--- a/ext/pdo/tests/pdo_018.phpt
+++ b/ext/pdo/tests/pdo_018.phpt
@@ -129,9 +129,20 @@ unset($stmt);
 echo "===DATA===\n";
 $res = $db->query('SELECT test.val FROM test')->fetchAll(PDO::FETCH_COLUMN);
 
-// For Oracle map NULL to empty string so the test doesn't diff
-if ($db->getAttribute(PDO::ATTR_DRIVER_NAME) == 'oci' && $res[0] === null) {
-    $res[0] = "";
+switch ($db->getAttribute(PDO::ATTR_DRIVER_NAME)) {
+	case 'dblib':
+		// map whitespace (from early TDS versions) to empty string so the test doesn't diff
+		if ($res[0] === ' ') {
+			$res[0] = '';
+		}
+		break;
+
+	case 'oci':
+		// map NULL to empty string so the test doesn't diff
+		if ($res[0] === null) {
+			$res[0] = '';
+		}
+		break;
 }
 var_dump($res);