使用include从1域到另一个域没有变量值

Question

I am trying to get the value of a variable from one domain to another using php include , but it is not working.

firstdomain.com/test1.php

<?php
  $i=10;
?>

seconddomain.com/test2.php

<?php
  include_once  "firstdomain.com/test1.php";
  echo $i;
?>

I have enabled allow_url_include, so I can now include the firstdomain.com/test1.php file to seconddomain.com/test2.php, but how do I get the value of $i?

Answer 1

You can't include php code code cross-domain, because the remote server evaluates the file before sending it.

Anyway, you can make the first script output the variables you need, e.g. as a JSON-String and read the output into a JSON object again.

firstdomain.com/foo.php

<?php
$data["i"] = 1;
echo json_encode($data);
?>

Outputs (to your web browser as well as to your other PHP script):

{"i":1}

seconddomain.com/bar.php

<?php
$data = json_decode(file_get_contents("http://firstdomain.com/foo.php"));
echo $data["i"];
?>

Outputs:

1