ip地址管理系统 php

<?php
class IPAM {
    private $ipDatabase = [];

    public function addIP($ip) {
        if (!isset($this->ipDatabase[$ip])) {
            $this->ipDatabase[$ip] = 'Allocated';
            echo "IP $ip added successfully.\n";
        } else {
            echo "IP $ip already allocated.\n";
        }
    }

    public function releaseIP($ip) {
        if (isset($this->ipDatabase[$ip])) {
            unset($this->ipDatabase[$ip]);
            echo "IP $ip released successfully.\n";
        } else {
            echo "IP $ip not found.\n";
        }
    }

    public function checkIP($ip) {
        if (isset($this->ipDatabase[$ip])) {
            echo "IP $ip is allocated.\n";
        } else {
            echo "IP $ip is not allocated.\n";
        }
    }
}

$ipam = new IPAM();
$ipam->addIP('192.168.1.1');
$ipam->checkIP('192.168.1.1');
$ipam->releaseIP('192.168.1.1');
$ipam->checkIP('192.168.1.1');
?>