[PHP] Checking if a website is up?

[Henry Grech-Cini]

Hi All,

I am trying to check if a website is up (reachable) and I have used the
standard code below:

Unfortunately this works for most sites but Microsoft doesn't work most of
the time even thought the site is definiately up! (Occassionally it does say
it is reachable but only occassionaly and thats whats even more confusing).

Suggestions?

Henry

I tried URL's as follows:

http://www.microsoft.com/
http://www.microsoft.com



   function url_reachable( $link )
   {
       $url_parts = @parse_url( $link );

    if ( $url_parts["scheme"]!="http" ) return ( false );

       if ( empty( $url_parts["host"] ) ) return( false );

       if ( !empty( $url_parts["path"] ) )
       {
           $documentpath = $url_parts["path"];
       }
       else
       {
           $documentpath = "/";
       }

       if ( !empty( $url_parts["query"] ) )
       {
           $documentpath .= "?" . $url_parts["query"];
       }

       $host = $url_parts["host"];
       $port = $url_parts["port"];
       // Now (HTTP-)GET $documentpath at $host";

       if (empty( $port ) ) $port = "80";
       $socket = @fsockopen( $host, $port, $errno, $errstr, 30 );
       if (!$socket)
       {
           return(false);
       }
       else
       {
           fwrite ($socket, "HEAD ".$documentpath." HTTP/1.0\r\nHost:
$host\r\n\r\n");
           $http_response = fgets( $socket, 22 );

           if ( ereg("200 OK", $http_response, $regs ) )
           {
               return(true);
               fclose( $socket );
           } else
           {
//                echo "HTTP-Response: $http_response<br>";
               return(false);
           }
       }
   }

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