如何使用Runkit_Sandbox打开文件

Question

I use the following code to open a file with Runkit_Sandbox:

<?php
$options = array(
  'open_basedir'=>'/var/www/html/test/',
  'allow_url_fopen'=>'true',
);
$sandbox = new Runkit_Sandbox($options);
$sandbox->ini_set('html_errors',true);

$sandbox->fopen('/var/www/html/test/data.txt', 'r');

?>

I already create the data.txt file in '/var/www/html/test/' directory with an appropriate permission. However, I still get this error:

Warning: Runkit_Sandbox::__call(): Unable to translate resource, or object variable to current context. in /var/www/html/test/write1.php on line 10

What am I missing here?

Answer 1

fopen() returns a resource. Resources and objects cannot be exchanged between interpreters. What you basicly do is open the file inside the sandbox, and ask to return the file handle from the sandbox into your current context. This is not possible.

You can use eval():

$sandbox->eval('
  $f = fopen("/var/www/html/test/data.txt", "r");
  // ... rest of the code
');