Get file name of a URL in PHP

I want to get the file name from a URL. But the problem is it's not ending with an extension.

For ex开发者_Python百科ample, http://something.com/1245/65/. On clicking this URL, we will get a PDF file. How do I store the file name of that file in a variable?

<?php
  header('Content-Type: text/plain');

  $curl = curl_init('http://localhost/fakefile.php');

  curl_setopt($curl, CURLOPT_HEADER, true);
  curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
  curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'HEAD');

  if (($response = curl_exec($curl)) !== false)
  {
    if (curl_getinfo($curl, CURLINFO_HTTP_CODE) == '200')
    {
      var_dump($response);

      $reDispo = '/^Content-Disposition: .*?filename=(?<f>[^\s]+|\x22[^\x22]+\x22)\x3B?.*$/m';
      if (preg_match($reDispo, $response, $mDispo))
      {
        $filename = trim($mDispo['f'],' ";');

        echo "Filename Found: $filename";
      }
    }
  }

  curl_close($curl);

That would parse the Content-Disposition line for the filename=foo.bar information (assuming it does render the file directly out using this method.)

If you issue a GET request for http://something.com/1245/65/ and it returns you a PDF file -- that is, something with Content-Type = application/pdf -- you have absolutely no way of knowing the actual name of the .pdf file that was sent to you.

In the web application that I work on, I generate and combine PDF files and stream them directly to the browser in response to just such a GET request - no actual file even exists so there definitely is not filename.

If you are in control of the server you could invent a way to communicate the name to the requester, or if it's your PHP code that wants to know (which runs on the server) you could provide some other server-side hook to find the filename.

Curiously enough, trying the same code you have above was making my webserver hang too. I replaced this code:

curl_setopt($curl, CURLOPT_CUSTOMREQUEST, 'HEAD');

With this:

curl_setopt($ch, CURLOPT_NOBODY, true);

Say if you have a url

$url = 'www/htdocs/lib/inc.php'

 $pathifo = pathinfo($url)// Return Array 

when you say $pathinfo['PATHINFO_FILENAME'] //It would output inc