Cara menggunakan PHP untuk melaksanakan fungsi analisis log akses tapak sistem CMS

<?php
    // 日志文件路径
    $logFile = 'access.log';

    // 获取访问信息
    $accessInfo = array(
        'time' => date('Y-m-d H:i:s'),
        'ip' => $_SERVER['REMOTE_ADDR'],
        'url' => $_SERVER['REQUEST_URI'],
        'referer' => $_SERVER['HTTP_REFERER'],
        'userAgent' => $_SERVER['HTTP_USER_AGENT']
    );

    // 将访问信息写入日志文件
    file_put_contents($logFile, json_encode($accessInfo) . PHP_EOL, FILE_APPEND);
?>

<?php
    // 日志文件路径
    $logFile = 'access.log';

    // 读取日志文件内容
    $logData = file_get_contents($logFile);
    $logLines = explode(PHP_EOL, $logData);

    // 解析日志内容
    foreach ($logLines as $logLine) {
        $accessInfo = json_decode($logLine, true);
        // 处理访问信息
        // ...
    }
?>

<?php
    // 统计访问次数最多的URL
    function getTopUrls($logLines, $count) {
        $urlCount = array();
        foreach ($logLines as $logLine) {
            $accessInfo = json_decode($logLine, true);
            $url = $accessInfo['url'];
            $urlCount[$url] = isset($urlCount[$url]) ? $urlCount[$url] + 1 : 1;
        }
        arsort($urlCount);
        return array_slice($urlCount, 0, $count, true);
    }

    // 统计访问次数最多的IP地址
    function getTopIPs($logLines, $count) {
        $ipCount = array();
        foreach ($logLines as $logLine) {
            $accessInfo = json_decode($logLine, true);
            $ip = $accessInfo['ip'];
            $ipCount[$ip] = isset($ipCount[$ip]) ? $ipCount[$ip] + 1 : 1;
        }
        arsort($ipCount);
        return array_slice($ipCount, 0, $count, true);
    }

    // 统计访问次数最多的浏览器
    function getTopBrowsers($logLines, $count) {
        $browserCount = array();
        foreach ($logLines as $logLine) {
            $accessInfo = json_decode($logLine, true);
            $browser = $accessInfo['userAgent'];
            $browserCount[$browser] = isset($browserCount[$browser]) ? $browserCount[$browser] + 1 : 1;
        }
        arsort($browserCount);
        return array_slice($browserCount, 0, $count, true);
    }

    // 使用示例
    $topUrls = getTopUrls($logLines, 5);
    $topIPs = getTopIPs($logLines, 5);
    $topBrowsers = getTopBrowsers($logLines, 5);
?>