Use RETS MD with a recent PHP (such as 5.6) with no warnings

retsmd.patch

commit 8dc0d08fb1979a6b6de39dbab514a0478cc7a844
Author: Luke Vivier <luke@vivier.ca>
Date:   Tue Jul 19 15:20:50 2016 -0700

    php 5.6 fixes

diff --git a/index.php b/index.php
index bd3fa0b..023be50 100644
--- a/index.php
+++ b/index.php
@@ -322,10 +322,10 @@ function code_peek() {
 
 	$field_list = $rets->SearchGetFields($search);
 	$rets->FreeResult($search);
-	
+
 	$system_to_long = array();
 	$table_metadata = $rets->GetMetadataTable($_REQUEST['r_resource'], $_REQUEST['r_class']);
-	
+
 	foreach ($table_metadata as $fi) {
 		$system_to_long["{$fi['SystemName']}"] = $fi['LongName'];
 	}
@@ -359,7 +359,7 @@ function code_peek() {
 	echo "</tr>\n";
 
 	echo "</table>\n";
-	
+
 	$rets->Disconnect();
 
 echo "
@@ -960,9 +960,10 @@ if (isset($_REQUEST['load']) && $_REQUEST['load'] == "demo") {
 else {
 	$user_agent = "RETSMD/1.0";
 	$rets_version = "1.5";
-	$username = $_REQUEST['username'];
-	$password = $_REQUEST['password'];
-	$login_url = $_REQUEST['login_url'];
+	$username = isset($_REQUEST['username']) ? $_REQUEST['username'] : null;
+	$password = isset($_REQUEST['password']) ? $_REQUEST['password'] : null;
+	$login_url = isset($_REQUEST['login_url']) ? $_REQUEST['login_url'] : null;
+	$ua_pwd = isset($_REQUEST['ua_pwd']) ? $_REQUEST['ua_pwd'] : null;
 }
 
 $possible_versions = array("1.0","1.5","1.7","1.7.2");