Merge pull request #17 from sanmai/pr/fix-5.6-build

Fix build on PHP 5.6

OLE/ChainedBlockStream.php

@@ -144,7 +144,11 @@ function stream_open($path, $mode, $options, &$openedPath)
     function stream_close()
     {
         $this->ole = null;
-        unset($GLOBALS['_OLE_INSTANCES']);
+
+        // $GLOBALS is not always defined in stream_close
+        if (isset($GLOBALS['_OLE_INSTANCES'])) {
+            unset($GLOBALS['_OLE_INSTANCES']);
+        }
     }
 
     /**
@@ -220,8 +224,17 @@ function stream_stat()
             );
     }
 
+    /**
+     * PHP 5.6 for some reason wants this to be implemented. Currently returning false as if it wasn't implemented.
+     * @return boolean
+     */
+    function stream_flush()
+    {
+        // If not implemented, FALSE is assumed as the return value.
+        return false;
+    }
+
     // Methods used by stream_wrapper_register() that are not implemented:
-    // bool stream_flush ( void )
     // int stream_write ( string data )
     // bool rename ( string path_from, string path_to )
     // bool mkdir ( string path, int mode, int options )

phpunit.xml.dist

@@ -1,5 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
-<phpunit bootstrap="vendor/autoload.php" verbose="true" colors="true">
+<phpunit bootstrap="vendor/autoload.php" verbose="true" colors="true"
+         convertNoticesToExceptions="true"
+>
 	<testsuites>
 		<testsuite>
 			<directory>tests/</directory>