初始化-安装依赖
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253
server/plugin/saiadmin/utils/ServerMonitor.php
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253
server/plugin/saiadmin/utils/ServerMonitor.php
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<?php
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// +----------------------------------------------------------------------
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// | saiadmin [ saiadmin快速开发框架 ]
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// +----------------------------------------------------------------------
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// | Author: sai <1430792918@qq.com>
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// +----------------------------------------------------------------------
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namespace plugin\saiadmin\utils;
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/**
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* 服务器监控信息
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*/
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class ServerMonitor
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{
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/**
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* 获取内存信息
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* @return array
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*/
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public function getMemoryInfo(): array
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{
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$totalMem = 0; // 总内存 (Bytes)
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$freeMem = 0; // 可用/剩余内存 (Bytes)
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if (stristr(PHP_OS, 'WIN')) {
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// Windows 系统
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// 一次性获取 总可见内存 和 空闲物理内存 (单位都是 KB)
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// TotalVisibleMemorySize: 操作系统可识别的内存总数 (比物理内存条总数略少，更准确反映可用上限)
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// FreePhysicalMemory: 当前可用物理内存
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$cmd = 'wmic OS get FreePhysicalMemory,TotalVisibleMemorySize /format:csv';
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$output = shell_exec($cmd);
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$output = mb_convert_encoding($output ?? '', 'UTF-8', 'GBK, UTF-8, ASCII');
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$lines = explode("\n", trim($output));
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foreach ($lines as $line) {
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$line = trim($line);
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if (empty($line)) continue;
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// CSV 格式: Node,FreePhysicalMemory,TotalVisibleMemorySize
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$parts = str_getcsv($line);
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// 确保解析正确且排除标题行 (通常索引1是Free, 2是Total)
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if (count($parts) >= 3 && is_numeric($parts[1])) {
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$freeMem = floatval($parts[1]) * 1024; // KB -> Bytes
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$totalMem = floatval($parts[2]) * 1024; // KB -> Bytes
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break;
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}
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}
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} else {
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// Linux 系统
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// 读取 /proc/meminfo，效率远高于 shell_exec('cat ...')
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$memInfo = @file_get_contents('/proc/meminfo');
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if ($memInfo) {
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// 使用正则提取 MemTotal 和 MemAvailable (单位 kB)
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// MemAvailable 是较新的内核指标，比单纯的 MemFree 更准确（包含可回收的缓存）
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if (preg_match('/^MemTotal:\s+(\d+)\s+kB/m', $memInfo, $matches)) {
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$totalMem = floatval($matches[1]) * 1024;
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}
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if (preg_match('/^MemAvailable:\s+(\d+)\s+kB/m', $memInfo, $matches)) {
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$freeMem = floatval($matches[1]) * 1024;
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} else {
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// 如果内核太老没有 MemAvailable，退化使用 MemFree
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if (preg_match('/^MemFree:\s+(\d+)\s+kB/m', $memInfo, $matches)) {
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$freeMem = floatval($matches[1]) * 1024;
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}
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}
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}
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}
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// 计算已用内存
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$usedMem = $totalMem - $freeMem;
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// 避免除以0
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$rate = ($totalMem > 0) ? ($usedMem / $totalMem) * 100 : 0;
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// PHP 自身占用
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$phpMem = memory_get_usage(true);
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return [
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// 人类可读格式 (String)
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'total' => $this->formatBytes($totalMem),
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'free' => $this->formatBytes($freeMem),
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'used' => $this->formatBytes($usedMem),
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'php' => $this->formatBytes($phpMem),
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'rate' => sprintf('%.2f', $rate) . '%',
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// 原始数值 (Float/Int)，方便前端图表使用或逻辑判断，统一单位 Bytes
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'raw' => [
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'total' => $totalMem,
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'free' => $freeMem,
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'used' => $usedMem,
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'php' => $phpMem,
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'rate' => round($rate, 2)
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]
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];
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}
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/**
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* 获取PHP及环境信息
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* @return array
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*/
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public function getPhpAndEnvInfo(): array
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{
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return [
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'php_version' => PHP_VERSION,
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'os' => PHP_OS,
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'project_path' => BASE_PATH,
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'memory_limit' => ini_get('memory_limit'),
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'max_execution_time' => ini_get('max_execution_time'),
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'error_reporting' => ini_get('error_reporting'),
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'display_errors' => ini_get('display_errors'),
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'upload_max_filesize' => ini_get('upload_max_filesize'),
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'post_max_size' => ini_get('post_max_size'),
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'extension_dir' => ini_get('extension_dir'),
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'loaded_extensions' => implode(', ', get_loaded_extensions()),
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];
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}
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/**
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* 获取磁盘信息
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* @return array
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*/
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public function getDiskInfo(): array
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{
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$disk = [];
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if (stristr(PHP_OS, 'WIN')) {
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// Windows 系统
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// 使用 CSV 格式输出，避免空格解析错误；SkipTop=1 跳过空行
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// LogicalDisk 包含: Caption(盘符), FreeSpace(剩余字节), Size(总字节)
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$cmd = 'wmic logicaldisk get Caption,FreeSpace,Size /format:csv';
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$output = shell_exec($cmd);
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// 转换编码，防止中文乱码（视服务器环境而定，通常 Windows CMD 输出为 GBK）
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$output = mb_convert_encoding($output ?? '', 'UTF-8', 'GBK, UTF-8, ASCII');
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$lines = explode("\n", trim($output));
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foreach ($lines as $line) {
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$line = trim($line);
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if (empty($line)) continue;
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// CSV 格式: Node,Caption,FreeSpace,Size
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$parts = str_getcsv($line);
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// 确保数据列足够且是一个盘符 (例如 "C:")
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// 索引通常是: 1=>Caption, 2=>FreeSpace, 3=>Size (索引0通常是计算机名)
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if (count($parts) >= 4 && preg_match('/^[A-Z]:$/', $parts[1])) {
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$caption = $parts[1];
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$freeSpace = floatval($parts[2]);
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$totalSize = floatval($parts[3]);
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// 避免除以 0 错误（如光驱未放入光盘时 Size 可能为 0 或 null）
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if ($totalSize <= 0) continue;
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$usedSpace = $totalSize - $freeSpace;
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$disk[] = [
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'filesystem' => $caption,
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'mounted_on' => $caption,
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'size' => $this->formatBytes($totalSize),
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'available' => $this->formatBytes($freeSpace),
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'used' => $this->formatBytes($usedSpace),
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'use_percentage' => sprintf('%.2f', ($usedSpace / $totalSize) * 100) . '%',
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'raw' => [ // 保留原始数据以便前端或其他逻辑使用
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'size' => $totalSize,
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'available' => $freeSpace,
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'used' => $usedSpace
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]
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];
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}
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}
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} else {
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// Linux 系统
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// -P: POSIX 输出格式（强制在一行显示，防止长挂载点换行）
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// -T: 显示文件系统类型
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// 默认单位是 1K-blocks (1024字节)
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$output = shell_exec('df -TP 2>/dev/null');
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$lines = explode("\n", trim($output ?? ''));
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// 过滤表头
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array_shift($lines);
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foreach ($lines as $line) {
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$line = trim($line);
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if (empty($line)) continue;
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// 限制分割数量，防止挂载点名称中有空格导致解析错位（虽然 -P 很大程度避免了这个问题，但仍需谨慎）
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$parts = preg_split('/\s+/', $line);
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// df -TP 输出列: Filesystem(0), Type(1), 1024-blocks(2), Used(3), Available(4), Capacity(5), Mounted on(6)
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if (count($parts) >= 7) {
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$filesystem = $parts[0];
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$type = $parts[1];
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$totalKB = floatval($parts[2]); // 单位是 KB
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$usedKB = floatval($parts[3]);
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$availKB = floatval($parts[4]);
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$mountedOn = $parts[6];
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// 过滤逻辑：只显示物理硬盘或特定挂载点
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// 通常过滤掉 tmpfs, devtmpfs, overlay, squashfs(snap) 等
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// 如果你只想看 /dev/ 开头的物理盘，保留原来的正则即可
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if (!preg_match('/^\/dev\//', $filesystem)) {
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// continue; // 根据需求决定是否取消注释此行
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}
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// 过滤掉 Docker overlay 或 kubelet 等产生的繁杂挂载
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if (strpos($filesystem, 'overlay') !== false) continue;
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// 转换为字节
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$totalSize = $totalKB * 1024;
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$usedSize = $usedKB * 1024;
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$freeSize = $availKB * 1024;
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if ($totalSize <= 0) continue;
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$disk[] = [
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'filesystem' => $filesystem,
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'type' => $type,
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'mounted_on' => $mountedOn,
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'size' => $this->formatBytes($totalSize),
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'available' => $this->formatBytes($freeSize),
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'used' => $this->formatBytes($usedSize),
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'use_percentage' => sprintf('%.2f', ($usedSize / $totalSize) * 100) . '%',
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'raw' => [
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'size' => $totalSize,
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'available' => $freeSize,
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'used' => $usedSize
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]
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];
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}
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}
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}
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return $disk;
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}
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/**
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* 格式化字节为可读格式 (B, KB, MB, GB, TB...)
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* @param int|float $bytes 字节数
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* @param int $precision 小数点后保留位数
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* @return string
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*/
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private function formatBytes($bytes, int $precision = 2): string
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{
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if ($bytes <= 0) {
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return '0 B';
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}
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$base = log($bytes, 1024);
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$suffixes = ['B', 'KB', 'MB', 'GB', 'TB', 'PB', 'EB'];
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// 确保不会数组越界
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$class = min((int)floor($base), count($suffixes) - 1);
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return sprintf("%." . $precision . "f", $bytes / pow(1024, $class)) . ' ' . $suffixes[$class];
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}
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}
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