[Bash][PHP] Script ports scanner

[SAKAROV]

Voici un scanner de ports "de base". A améliorer !

#!/usr/bin/php
#THC PortScanner
#Syntax : [Target-IP] [start_port] [end_port]
#example: php ./THC_PS.sh 103.21.08.112 1 200
#This line will scan the target IP 103.21.08.112 from port 1 to 200

#Scanner

<?php
    error_reporting(0);
    $host = $_SERVER['argv'][1]; 
    $start = $_SERVER['argv'][2];  
    $end = $_SERVER['argv'][3];       
    $delay = 1;                        
    function USAGE() 
    	{
        print("PHP Port Scanner - Version: 1.0" . "\n");
        print("by \"THC\"" . "\n");
        print("\n");
        print("Usage: php {$_SERVER['argv'][0]} [hostname] [start_port] [end_port]" . "\n");
        print("\t" . "Example: php {$_SERVER['argv'][0]} google.com 1 150" . "\n\n");
        die();
        } 
    if($_SERVER['argc'] != 4) USAGE();
    for($i = $start; $i < $end; $i++) {
        $fp = fsockopen($host, $i, $errno, $errstr, $delay);
        if(getservbyport($i, 'tcp') == '') { $protocol = "unknown"; } else { $protocol = getservbyport($i, 'tcp'); }
        if($fp) 
        {
        	echo "port $i [$protocol] open on $host" . "\n";
        	fclose($fp);
        } 
        else 
        {
#    Uncomment the next line if you want to see Closed ports too.
#    echo "port $i [$protocol] open on $host" . "\n";
} 
        	flush();
         }
?>