我可以从http://www.example.com/example.php下载.php文件吗？

Question

I have created a file download system with php. I created like that

phpfiledownload.php
--------------------

<?php 
$file = 'testing.php'; 
if (file_exists($file)) {
  header('Content-Description: File Transfer');
  header('Content-Type: application/octet-stream');
  header('Content-Disposition: attachment; filename='.basename($file));
  header('Content-Transfer-Encoding: binary');
  header('Expires: 0');
  header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
  header('Pragma: public');
  header('Content-Length: ' . filesize($file));
  ob_clean();
  flush();
  readfile($file);
  exit; 
} ?>

And I also created testing.php file like the following

testing.php
------------
<?php echo "Hello World"; ?>

When I run phpfiledownload.php form my localhost I got testing.php file.

But when I change testing.php to http://www.anotherdomain.com/example.php in phpfiledownload.php I can't download http://www.anotherdomain.com/example.php.

So, how I can got http://www.anotherdomain.com/example.php via my phpfiledownload.php

Answer 1

To download http://www.example.com/example.php you can use the code below

file_put_contents("example.php", fopen("http://www.example.com/example.php", 'r'));

Note: If example.php contains php code it will run on the webserver and return the HTML output to you. So your file be the output of example.php and not the source code.