PHP命令行日志切割与管理技巧

function rotateLog($logFile, $maxSize = 100 * 1024 * 1024) {
    if (!file_exists($logFile)) return;
$filesize = filesize($logFile);
if ($filesize >= $maxSize) {
    $newName = $logFile . '.' . date('Ymd_His');
    rename($logFile, $newName);

    // 可选：压缩归档
    exec("gzip {$newName} &");
}
}
// 使用示例
rotateLog('/var/log/myapp.log', 50  1024  1024); // 超过50MB则切割

# /etc/logrotate.d/myapp
/var/log/myapp.log {
    daily
    missingok
    rotate 7
    compress
    delaycompress
    copytruncate
    notifempty
}

# 每天凌晨1点运行日志处理
0 1 * * * /usr/bin/php /path/to/rotate.php