[php] Port Prober

PHP Port Prober

This is just a simple little script, but it has proven it's usefulness over and over to me. I thought you might want to find this useful as well!

Code:

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<?php
$IPAddress = "127.0.0.1";
$Port = "80";

if($fp=fsockopen($IPAddress,$Port,$ERROR_NO,$ERROR_STR,(float)0.5))
{
****echo "<font color=\"green\">Online</font>";
****fclose($fp);
}
else
{
****echo "<font color=\"red\">Offline</font>";
}
?>

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What does this do? It checks if the script can open a connection to the specified IP on the specified port and if it can, it will say Online, and if not.. Take a guess.

It will be able to make a connection if the port is open (thus it's useful as a port prober) and if there is an application to accept the connection (webserver, FTP server, SSH server, peer-to-peer client/server, etc).

Soooooooo. I guess that's it. Oh, configuring it. It's pretty easy, just change 127.0.0.1 to whatever IP or domainname or whatever you want, and 80 to the port you want it to connect to.
For webservers, the default port is 80. FTP is 21. Torrent is 6881-688x I think.
Yeah. Good luck.

Disclaimer: This application might or might not be useful to you. If it is abused somehow (I can't think of any way, but if), don't sue me. Really, please don't. It'll cost me a lot of money, and I love my money.

As far as I recall, since PHP5, the socket module isn't included by default so even for something as simple as this (since I doubt someone thoroughly experienced in PHP would need this >.>), it's best to check php.ini for the needed module includes being uncommented.

Everywhere I've tested it, it worked; and no additional modules were put on by me. Then again, it might've been the webhosting company that turned on the modules.

No, an experienced PHPer would not need this. It's just a nifty little tool, which I use myself to check if my torrent ports are open, for example.

Quote:

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It's just a nifty little tool, which I use myself to check if my torrent ports are open, for example.[/b]

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Nmap?

...I hate you.

Quote:

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Originally Posted by TweaK

Everywhere I've tested it, it worked; and no additional modules were put on by me. Then again, it might've been the webhosting company that turned on the modules.
[/b]

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Exactly as I mean: just in case it doesn't work for someone, it's best to check if the socket module is loaded or not (since, once again, it's disabled by default in PHP5).

Also, curious, is there some reason for typecasting float onto the timeout when the default type for that parameter is float as it is? Some bug fix or what not?

I don't know if it can be called a bug fix, but without the float typecasting it wouldn't work for me on my demonation.net webserver.