[Resolved] Checking if file exists for includes() (remote)

savaloid

Hi,

The problem I am having is that I want to check whether a file exists before using it in an includes(). I have had a look through previous postings and have tried using the is_file function but it didn't work.

The file I am trying to include/check if exists is located on a different server from my php page and I read that is_file does not work with files located remotely.

  eg. current page: [url]http://www.abc.com/base.php[/url]
        including: [url]http://www.zyx.com/includeme.php[/url]

My question is, is it possible to use the is_file function to check whether the file exists in this scenario, and, if not, is there an alternative way of checking if the file exists?

Hope that made sense :>

Marc

dalecosp

From the manual notes on file_exists(),

function url_header($url) {
      $url = preg_replace('#^http:#i', '', $url);
      if (preg_match('#^//#', $url)){
               list(,,$domain, $file) = explode('/', $url, 4);
               $file = "/$file";
       } else {
               $file = $url;
               if (! preg_match('#^/#', $file)) $file = "/$file";
               $domain = $_SERVER[HTTP_HOST];
      }
       $fid = fsockopen($domain, 80);
       if (! $fid) return "Host not responding";
       fputs($fid, "HEAD $file HTTP/1.0\r\nHost: $domain\r\n\r\n");
       $head = fread($fid, 4096);
       fclose($fid);
       echo "
\n<pre>\n$head<pre>";
       return $head;
}

function url_exists($url) {
       return preg_match('#^HTTP/.*\s+200\sOK\s#i', url_header($url));
}

savaloid

Cheers,

that seemed to do the job, but I seem to be having a little trouble with my call to the function:

code__________________________________

if (url_exists($path."content/".$name.".php")){
echo "yahoo";
}else{
echo "wah";
}

where $path is equal to : 'http://www.xyz.com'
and $name is the name of the final eg 'display'

it always echos 'wah' even when the file exists. Why is this happening?

dalecosp

if (url_exists($path."content/".$name.".php")){ 
echo "yahoo"; 
}else{ 
echo "wah"; 
echo "<br>".$path."content/".$name.".php";
}

???

savaloid

I found the problem, it wasn't my call to the function preg_match was always returning false so I copied and pasted again and it worked.

thanks for your help dalecosp.