基于PHP实现端口批量查询工具

Here's the PHP code for a port scanner tool that allows you to scan a range of IP addresses and ports for open connections:

<?php

class PortScanner {

    private $ipRange;
    private $portRange;
    private $timeout;

    public function __construct($ipRange, $portRange, $timeout = 1) {
        $this->ipRange = $ipRange;
        $this->portRange = $portRange;
        $this->timeout = $timeout;
    }

    public function scan() {
        $openPorts = [];

        foreach ($this->getIPs() as $ip) {
            foreach ($this->getPorts() as $port) {
                if ($this->isPortOpen($ip, $port)) {
                    $openPorts[] = ["IP: $ip", "Port: $port"];
                }
            }
        }

        return $openPorts;
    }

    private function getIPs() {
        $ips = [];

        $ipRangeParts = explode('-', $this->ipRange);
        $startIP = ip2long($ipRangeParts[0]);
        $endIP = ip2long($ipRangeParts[1]);

        for ($ip = $startIP; $ip <= $endIP; $ip++) {
            $ips[] = long2ip($ip);
        }

        return $ips;
    }

    private function getPorts() {
        $ports = [];

        $portRangeParts = explode('-', $this->portRange);
        $startPort = intval($portRangeParts[0]);
        $endPort = intval($portRangeParts[1]);

        for ($port = $startPort; $port <= $endPort; $port++) {
            $ports[] = $port;
        }

        return $ports;
    }

    private function isPortOpen($ip, $port) {
        $socket = @fsockopen($ip, $port, $errno, $errstr, $this->timeout);
        if ($socket) {
            fclose($socket);
            return true;
        } else {
            return false;
        }
    }
}

// Example usage
$scanner = new PortScanner('192.168.1.0-192.168.1.255', '25-80');
$openPorts = $scanner->scan();

if ($openPorts) {
    echo "Open ports:\n";
    foreach ($openPorts as $portInfo) {
        echo "  - " . implode(' ', $portInfo) . "\n";
    }
} else {
    echo "No open ports found in the specified range.\n";
}

Explanation:

1. PortScanner Class:

   • __construct(): Initializes the class with the IP range ($ipRange), port range ($portRange), and timeout ($timeout).
   • scan(): The main scanning function.
     • Iterates through the IP addresses and ports using getIPs() and getPorts() methods.
     • For each IP-port combination, calls isPortOpen() to check if the port is open.
     • Adds open ports to the $openPorts array.
     • Returns the $openPorts array.
   • getIPs(): Expands the IP range string (192.168.1.0-192.168.1.255) into an array of individual IP addresses using ip2long() and long2ip().
   • getPorts(): Creates an array of ports within the specified range (25-80) using a simple loop.
   • isPortOpen(): Checks if a specific port on an IP is open using fsockopen().
     • Returns true if the port is open, false otherwise.

2. Example Usage:

   • Creates a PortScanner object with the desired IP and port ranges.
   • Calls scan() to perform the port scan.
   • Checks if any open ports were found ($openPorts).
   • If open ports are found, prints a list of them.
   • Otherwise, indicates that no open ports were found.

Key Points:

• This code provides a basic port scanning functionality.
• You can modify the isPortOpen() function to handle different types of ports (e.g., TCP, UDP) and more advanced error handling.
• Use