如何在 PHP 中获取系统信息？

How to get system info in PHP?

提问by Phil

I want to get the system memory usage (and also HDD space info) in PHP. Is there any way to do without invoking commands using systemcalls?

我想在 PHP 中获取系统内存使用情况（以及硬盘空间信息）。有没有办法不用调用来调用命令system？

Note: I am not looking for the script memory usage, but the system memory usage.

注意：我不是在寻找脚本内存使用情况，而是系统内存使用情况。

采纳答案by nimrodm

On Linux, you can read /proc/meminfoto get information on total and available system memory (just cat /proc/meminfo-- it's a simple text file you can easily parse).

在 Linux 上，您可以阅读/proc/meminfo以获取有关总内存和可用系统内存的信息（只是cat /proc/meminfo——这是一个可以轻松解析的简单文本文件）。

I'm not sure you can get filesystem information from procfs, by try looking at /proc/sys/fsfor interesting information.

我不确定您是否可以通过尝试查找/proc/sys/fs有趣的信息来从 procfs 获取文件系统信息。

回答by Sarfraz

You are looking for phpSysInfo:

您正在寻找phpSysInfo：

phpSysInfo is a PHP script that displays information about the host being accessed. It will displays things like :

phpSysInfo 是一个 PHP 脚本，用于显示有关正在访问的主机的信息。它将显示如下内容：

• Uptime
• CPU
• Memory
• SCSI, IDE, PCI
• Ethernet
• Floppy
• Video Information

• 正常运行时间
• 中央处理器
• 记忆
• SCSI、IDE、PCI
• 以太网
• 软盘
• 视频信息

Check out the DEMO

查看演示

回答by Phil

This is putting out everything about cpu, ram, hdd and network in JSON format. (good for handling it with jQuery)

这是以 JSON 格式输出有关 cpu、ram、hdd 和网络的所有内容。（适合用 jQuery 处理它）

<?php
        //cpu stat
        $prevVal = shell_exec("cat /proc/stat");
        $prevArr = explode(' ',trim($prevVal));
        $prevTotal = $prevArr[2] + $prevArr[3] + $prevArr[4] + $prevArr[5];
        $prevIdle = $prevArr[5];
        usleep(0.15 * 1000000);
        $val = shell_exec("cat /proc/stat");
        $arr = explode(' ', trim($val));
        $total = $arr[2] + $arr[3] + $arr[4] + $arr[5];
        $idle = $arr[5];
        $intervalTotal = intval($total - $prevTotal);
        $stat['cpu'] =  intval(100 * (($intervalTotal - ($idle - $prevIdle)) / $intervalTotal));
        $cpu_result = shell_exec("cat /proc/cpuinfo | grep model\ name");
        $stat['cpu_model'] = strstr($cpu_result, "\n", true);
        $stat['cpu_model'] = str_replace("model name    : ", "", $stat['cpu_model']);
        //memory stat
        $stat['mem_percent'] = round(shell_exec("free | grep Mem | awk '{print / * 100.0}'"), 2);
        $mem_result = shell_exec("cat /proc/meminfo | grep MemTotal");
        $stat['mem_total'] = round(preg_replace("#[^0-9]+(?:\.[0-9]*)?#", "", $mem_result) / 1024 / 1024, 3);
        $mem_result = shell_exec("cat /proc/meminfo | grep MemFree");
        $stat['mem_free'] = round(preg_replace("#[^0-9]+(?:\.[0-9]*)?#", "", $mem_result) / 1024 / 1024, 3);
        $stat['mem_used'] = $stat['mem_total'] - $stat['mem_free'];
        //hdd stat
        $stat['hdd_free'] = round(disk_free_space("/") / 1024 / 1024 / 1024, 2);
        $stat['hdd_total'] = round(disk_total_space("/") / 1024 / 1024/ 1024, 2);
        $stat['hdd_used'] = $stat['hdd_total'] - $stat['hdd_free'];
        $stat['hdd_percent'] = round(sprintf('%.2f',($stat['hdd_used'] / $stat['hdd_total']) * 100), 2);
        //network stat
        $stat['network_rx'] = round(trim(file_get_contents("/sys/class/net/eth0/statistics/rx_bytes")) / 1024/ 1024/ 1024, 2);
        $stat['network_tx'] = round(trim(file_get_contents("/sys/class/net/eth0/statistics/tx_bytes")) / 1024/ 1024/ 1024, 2);
        //output headers
        header('Content-type: text/json');
        header('Content-type: application/json');
        //output data by json
        echo    
        "{\"cpu\": " . $stat['cpu'] . ", \"cpu_model\": \"" . $stat['cpu_model'] . "\"" . //cpu stats
        ", \"mem_percent\": " . $stat['mem_percent'] . ", \"mem_total\":" . $stat['mem_total'] . ", \"mem_used\":" . $stat['mem_used'] . ", \"mem_free\":" . $stat['mem_free'] . //mem stats
        ", \"hdd_free\":" . $stat['hdd_free'] . ", \"hdd_total\":" . $stat['hdd_total'] . ", \"hdd_used\":" . $stat['hdd_used'] . ", \"hdd_percent\":" . $stat['hdd_percent'] . ", " . //hdd stats
        "\"network_rx\":" . $stat['network_rx'] . ", \"network_tx\":" . $stat['network_tx'] . //network stats
        "}";
        ?>

回答by makra

Linfoprovides most important system status information. You just need a system where /procand /sysare mounted (most unix-like system, I guess).

Linfo提供最重要的系统状态信息。你只需要一个系统，/proc并/sys安装（大多数的类Unix系统，我猜）。

From the website: Information Shown

来自网站：显示的信息

• CPU Type
• RAM Usage
• PCI/USB devices
• Hard drives
• File system mounts
• Network devices
• Temps/Voltages via hddtemp/mbmon
• Software raid arrays (either by mdadm or gmirror)
• System load / number of processes, threads
• Linux distribution, if possible

• CPU类型
• 内存使用
• PCI/USB 设备
• 硬盘驱动器
• 文件系统挂载
• 网络设备
• 通过 hddtemp/mbmon 的温度/电压
• 软件 raid 阵列（通过 mdadm 或 gmirror）
• 系统负载/进程数、线程数
• 如果可能，Linux 发行版