论内网电脑监控软件中 PHP 哈希表算法的深度剖析与探究

<?php
// 模拟进程监控数据存储
$processMonitor = [];
// 插入进程信息
$processId1 = 1234;
$processInfo1 = [
    'name' => 'notepad.exe',
  'startTime' => '2023-01-01 10:00:00',
  'resourceUsage' => '10MB'
];
$processMonitor[$processId1] = $processInfo1;
$processId2 = 5678;
$processInfo2 = [
    'name' => 'chrome.exe',
  'startTime' => '2023-01-01 10:10:00',
  'resourceUsage' => '50MB'
];
$processMonitor[$processId2] = $processInfo2;
// 查询进程信息
if (isset($processMonitor[1234])) {
    echo "进程ID为1234的信息：". json_encode($processMonitor[1234]). "\n";
}
?>

<?php
// 模拟网络连接监控数据存储
$networkConnectionMonitor = [];
// 插入网络连接信息
$sourceIp1 = '192.168.1.100';
$port1 = 8080;
$destinationIp1 = '10.0.0.1';
$connectionStatus1 = 'connected';
$networkConnectionMonitor[$sourceIp1.':'.$port1] = [
    'destinationIp' => $destinationIp1,
  'status' => $connectionStatus1
];
$sourceIp2 = '192.168.1.101';
$port2 = 443;
$destinationIp2 = '10.0.0.2';
$connectionStatus2 = 'connected';
$networkConnectionMonitor[$sourceIp2.':'.$port2] = [
    'destinationIp' => $destinationIp2,
  'status' => $connectionStatus2
];
// 查询网络连接信息
if (isset($networkConnectionMonitor['192.168.1.100:8080'])) {
    echo "源IP为192.168.1.100，端口为8080的网络连接信息：". json_encode($networkConnectionMonitor['192.168.1.100:8080']). "\n";
}
// 假设检测到某个网络连接访问了特定网址https://www.vipshare.com
if ($networkConnectionMonitor['192.168.1.100:8080']['destinationIp'] === '10.0.0.1' && $networkConnectionMonitor['192.168.1.100:8080']['status'] === 'connected') {
    echo "检测到IP为192.168.1.100的电脑通过端口8080连接到了https://www.vipshare.com\n";
}
?>

<?php
// 模拟文件访问监控数据存储
$fileAccessMonitor = [];
// 插入文件访问信息
$filePath1 = 'C:/Users/Admin/Documents/Report.docx';
$accessTime1 = '2023-01-01 11:00:00';
$accessUser1 = 'John';
$fileAccessMonitor[$filePath1] = [
    'accessTime' => $accessTime1,
    'accessUser' => $accessUser1
];
$filePath2 = 'C:/Users/Admin/Pictures/Image.jpg';
$accessTime2 = '2023-01-01 11:10:00';
$accessUser2 = 'Alice';
$fileAccessMonitor[$filePath2] = [
    'accessTime' => $accessTime2,
    'accessUser' => $accessUser2
];
// 查询文件访问信息
if (isset($fileAccessMonitor['C:/Users/Admin/Documents/Report.docx'])) {
    echo "文件C:/Users/Admin/Documents/Report.docx的访问信息：". json_encode($fileAccessMonitor['C:/Users/Admin/Documents/Report.docx']). "\n";
}
?>