52 lines
1.3 KiB
PHP
52 lines
1.3 KiB
PHP
<?php
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namespace App\Utils;
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class MemoryHelper
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{
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/**
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* 获取系统内存使用情况
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*
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* @return array [
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* 'total' => 总内存（MB）
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* 'used' => 已用内存（MB）
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* 'free' => 剩余内存（MB）
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* 'usage' => 使用率（百分比）
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* ]
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*/
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public static function getMemoryInfo(): array
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{
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$meminfo = self::readMeminfo();
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$total = $meminfo['MemTotal'] ?? 0;
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$free = ($meminfo['MemFree'] ?? 0)
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+ ($meminfo['Buffers'] ?? 0)
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+ ($meminfo['Cached'] ?? 0)
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+ ($meminfo['SReclaimable'] ?? 0);
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$used = $total - $free;
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$usage = $total > 0 ? round($used / $total * 100, 2) : 0;
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return [
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'total' => round($total / 1024, 2), // 转 MB
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'used' => round($used / 1024, 2),
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'free' => round($free / 1024, 2),
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'usage' => $usage,
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];
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}
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/**
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* 读取 /proc/meminfo 并返回数组
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*/
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private static function readMeminfo(): array
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{
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$data = [];
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foreach (file('/proc/meminfo') as $line) {
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if (preg_match('/^(\S+):\s+(\d+)/', $line, $matches)) {
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$data[$matches[1]] = (int) $matches[2]; // 单位 kB
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}
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}
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return $data;
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}
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}
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