PHP Simple Server Info

A PHP 8.1+ library that reads server and system information directly from the Linux /proc and /sys virtual filesystems.

No exec, shell_exec, or other shell commands are used — all data is read from virtual filesystem files, making this safe, portable, and easy to audit.

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Requirements

• Linux/Unix OS with Procfs support (/proc).
• PHP 8.1 or later.

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Installation

composer require danielme85/simple-server-info

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Quick start

use danielme85\Server\Info;

// Instantiate directly
$info = new Info();

// Or use the static factory for method chaining
$cpuLoad = Info::get()->cpuLoad(sampleSec: 1, rounding: 2);

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Architecture

The library is organised around small, focused Collector classes, each responsible for a single concern. The Info class is a facade that delegates to the collectors while preserving a clean, unified API.

src/
├── Contracts/
│   └── CollectorInterface.php   # Interface implemented by every collector
├── Collectors/
│   ├── AbstractCollector.php    # Shared parsing helpers
│   ├── CpuCollector.php         # CPU info & load
│   ├── DiskCollector.php        # Disk partitions & volumes
│   ├── GpuCollector.php         # GPU info & resource usage
│   ├── MemoryCollector.php      # RAM & swap
│   ├── NetworkCollector.php     # Network interfaces & TCP connections
│   ├── ProcessCollector.php     # Process listing & CPU usage
│   └── SystemCollector.php      # Uptime & kernel version
├── Formatter.php                # Byte-formatting helper
├── Info.php                     # Public facade
├── ProcReader.php               # Low-level /proc file reader
└── SysReader.php                # Low-level /sys file reader

Collectors can be used independently:

use danielme85\Server\ProcReader;
use danielme85\Server\SysReader;
use danielme85\Server\Collectors\CpuCollector;
use danielme85\Server\Collectors\GpuCollector;

$cpu = new CpuCollector(new ProcReader());
$load = $cpu->load(sampleSec: 1);

$gpu = new GpuCollector(new ProcReader(), new SysReader());
$gpus = $gpu->gpus();

Or accessed through the facade:

$load = Info::get()->cpu()->load();

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API Reference

CPU

// All cores, all fields
$cpuInfo = Info::get()->cpuInfo();

// Single core, specific fields
$core0 = Info::get()->cpuInfo(core: 0, returnonly: ['processor', 'cpu_mhz', 'cache_size']);

// Load percentage per core (samples over $sampleSec seconds)
$cpuLoad = Info::get()->cpuLoad(sampleSec: 1, rounding: 2);
// Returns: ['cpu' => ['label' => 'CPU', 'load' => 12.5], 'cpu0' => [...], ...]

Memory

// Usage summary with formatted sizes (e.g. "512.00 MB")
$usage = Info::get()->memoryUsage();

// Raw byte values
$usageBytes = Info::get()->memoryUsage(formatSizes: false);

// Percentage load
$load = Info::get()->memoryLoad(rounding: 2);
// Returns: ['load' => 42.5, 'swap_load' => 0.0]

// Full /proc/meminfo dump (bytes)
$all = Info::get()->memoryInfo();

Disk & Volumes

// Block device information from /proc/partitions
$disks = Info::get()->diskInfo();

// Mounted volume usage (filtered by filesystem type)
$volumes = Info::get()->volumesInfo();

// Customise which filesystem types to include
// Defaults: ext, ext2, ext3, ext4, btrfs, xfs, zfs, fat32, ntfs, tmpfs, vboxsf
$info = new Info(filesystemTypes: ['ext4', 'xfs']);
$volumes = $info->volumesInfo();

Processes

// All processes (stat + status combined)
$all = Info::get()->processes();

// Single process
$proc = Info::get()->process(pid: 1);

// Filtered: specific fields, stat only, running only
$running = Info::get()->processes(
    returnonly: ['pid', 'comm', 'state', 'vsize'],
    returntype: 'stat',
    runningonly: true
);

// Active or running processes with CPU usage
$active = Info::get()->processesActiveOrRunning(
    returnonly: ['comm', 'state', 'pid', 'cpu_usage'],
    returntype: 'stat'
);

Network

// Network interface statistics (keyed by interface name)
$interfaces = Info::get()->networks();

// With per-second load calculation (adds a 1s sleep)
$withLoad = Info::get()->networks(returnOnly: ['face', 'bytes', 'bytes_out', 'load', 'load_out']);

// TCP connections
$connections = Info::get()->tcpConnections(includeLocalhost: false);

// Summarised by local IP:port
$summary = Info::get()->tcpConnectionsSummarized();

System / Uptime

$uptime = Info::get()->uptime();
// Returns:
// [
//   'current_unix' => 1700000000,
//   'uptime_unix'  => 86400,
//   'started_unix' => 1699913600,
//   'started'      => '2023-11-13 12:00:00',
//   'current'      => '2023-11-14 12:00:00',
//   'uptime'       => '1:00:00:00',
//   'uptime_text'  => '1 days, 0 hours, 0 minutes and 0 seconds',
// ]

$info = Info::get()->otherInfo();
// Returns: ['version' => '...', 'version_signature' => '...']

GPU

Reads GPU hardware info and resource usage from /sys/class/drm/. Supports AMD and NVIDIA (open kernel module) GPUs. Available fields depend on the installed driver — absent metrics are simply omitted from the output.

$gpus = Info::get()->gpuInfo();
// Returns an array keyed by card name, e.g.:
// [
//   'card0' => [
//     'vendor'             => 'AMD',
//     'vendor_id'          => '0x1002',
//     'device_id'          => '0x687f',
//     'vram_total'         => 8589934592,
//     'vram_total_format'  => '8.00 GB',
//     'vram_used'          => 1073741824,
//     'vram_used_format'   => '1.00 GB',
//     'vram_load'          => 12.5,
//     'gpu_busy_percent'   => 34,
//     'temperature_celsius'=> 62.0,
//   ],
// ]

// Or via the typed collector:
$gpuCollector = Info::get()->gpu();
$gpus = $gpuCollector->gpus();

Formatting helper

use danielme85\Server\Formatter;

echo Formatter::bytes(1073741824); // "1.00 GB"

// Also available as a static method on Info for backward compatibility:
echo Info::formatBytes(1073741824);

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Extending

Extend AbstractCollector to create a custom collector. ProcReader is always injected as $this->proc. Pass a SysReader as the second constructor argument if your collector needs /sys access ($this->sys).

use danielme85\Server\Contracts\CollectorInterface;
use danielme85\Server\Collectors\AbstractCollector;

class LoadAvgCollector extends AbstractCollector implements CollectorInterface
{
    public function all(): array
    {
        $lines = $this->proc->lines('loadavg');
        $parts = explode(' ', $lines[0] ?? '');

        return [
            '1min'  => (float) ($parts[0] ?? 0),
            '5min'  => (float) ($parts[1] ?? 0),
            '15min' => (float) ($parts[2] ?? 0),
        ];
    }
}

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Running Tests

composer install
./vendor/bin/phpunit

Tests require a Linux environment with /proc available. CI runs automatically via GitHub Actions on PHP 8.1, 8.2, 8.3, and 8.4.