improve open_basedir handling

ext/mysql/tests/mysql_query_load_data_openbasedir.phpt

@@ -3,11 +3,6 @@ LOAD DATA INFILE - open_basedir
 --SKIPIF--
 <?php
 @include_once("connect.inc");
-
-if (!isset($db)) {
-  die("skip open_basedir setting prevents inclusing of required files");
-}
-
 include_once('skipif.inc');
 include_once('skipifconnectfailure.inc');
 
@@ -31,12 +26,11 @@ if ($socket == "" && $host != NULL && $host != 'localhost' && $host != '.') {
 	}
 }
 ?>
---INI--
-open_basedir="."
 --FILE--
 <?php
 @include_once("connect.inc");
-
+ini_set("open_basedir", __DIR__);
+chdir(__DIR__);
 if (!isset($db)) {
 	// run-tests, I love you for not allowing me to set ini settings dynamically
 	print "[006] [1148] The used command is not allowed with this MySQL version