1 files changed, 9 insertions, 2 deletions

diff --git a/php/phpgats2.php b/php/phpgats2.php
index effaa78..f97bd89 100644
--- a/php/phpgats2.php
+++ b/php/phpgats2.php
@@ -237,7 +237,11 @@ function _phpgats2_writeDictionary( $d )
 
 function _phpgats2__write( $unknown )
 {
-        if( is_bool( $unknown ) )
+    if( is_null( $unknown ) )
+    {
+        return 'n';
+    }
+    else if( is_bool( $unknown ) )
         {
                 return _phpgats2_writeBoolean( $unknown );
         }
@@ -462,7 +466,10 @@ function _phpgats2_parseMaster( $str_data, &$offset, $dbg=0 )
                 case '0':
                         //echo "false\n";
                         return false;
-                        break;
+            break;
+        case 'n':
+            return null;
+            break;
                 default:
                         //echo "str:";
                         $obj = _phpgats2_parseString( $str_data, $offset, $dbg );