Port scanner class. An example of usage is as follow where my IP is 192.168.1.10. The upper range for scanning isn’t alive: 192.168.1.11. I hide warnings due to open socket failure which will happen because the IP isn’t alive.

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<?php
	ini_set( "display_errors", 0);
	require_once("scanner.class.php");
	$ip_address1 = "192.168.1.10";
	$ip_address2 = "192.168.1.11";
	$my_scanner = new PortScanner($ip_address1, $ip_address2);
 
	$my_scanner->set_ports("80");
 
	$results = $my_scanner->do_scan();
 
	foreach($results as $ip=>$ip_results) {
		echo gethostbyaddr($ip)."\n<blockquote>\n";
 
 
		foreach($ip_results as $port=>$port_results) {
			echo "\t".$port." : ".$port_results['pname']." : ";
			if ($port_results['status']==1){echo "open";}
			else {echo "closed";}echo "<br />\n";
		}
		echo "</blockquote>\n\n";
	  }
 
?>

Results are as follow (it includes developerfusion.com port scan by default (?)):

developerfusion.com

15 : netstat : closed
16 : N/A : closed
17 : qotd : closed
18 : msp : closed
19 : chargen : closed
20 : ftp-data : closed
21 : ftp : closed
22 : ssh : closed
23 : telnet : closed
24 : N/A : closed
25 : smtp : open
80 : www : open
110 : pop3 : closed
3306 : mysql : closed
1337 : N/A : closed
666 : N/A : closed

xp-racy.local

80 : www : open

192.168.1.11

80 : www : closed