Linux System Information

This is a light-weight library to gather information (stats) about the Linux system it is running on.

The information is read from the files in /proc/* and /etc/*. These are usually world readable, but your system may vary. There is no dependency on system or execcalls to binaries installed on your system.

Features

• PSR-4 auto loading compliant structure
• Example file
• Normalize stats to "human readable" form
• Extendability

Stats that can be fetched

• hostname
• load average for 1, 5 or 15 minutes
• memory as total, available and used
• file system size and usage

Requirements

• Linux
• PHP 5.5

Installation

With composer simply do composer require ahaaje/linux-system-information inside your project directory.

Usage

This is from the example file. You should not need to require the auto loader if already using composer to manage your project requirements

<?php
require '../vendor/autoload.php';

use Ahaaje\LinuxSystemInformation\System;

try {
    $system = new System();

    echo 'Host:' . $system, PHP_EOL;
    echo 'Load average last 5 minutes: ' . $system->getLoadAverage(5), PHP_EOL;
    echo 'Total memory: ' . $system->getMemoryCategory('total'), PHP_EOL;
    echo 'Used memory: ' . $system->getMemoryCategory('used'), PHP_EOL;
    echo 'Available memory: ' . $system->getMemoryCategory('available'), PHP_EOL;
} catch (\RuntimeException $e) {
    // Some stat could not be accessed
    echo get_class($e) . ' : ' . $e->getMessage(), PHP_EOL;
} catch (\Exception $e) {
    echo 'FATAL EXCEPTION: ' . $e->getMessage(), PHP_EOL;
}

Stat numbers for disk space and memory are returned as kilo bytes, but you can add true as a second parameter to the get*Category() functions to have them normalized into MB, GB or TB - like this php $system->getMemoryCategory('total', true)

Exceptions

Exceptions are thrown as siblings of RuntimeException if some stats can't be read or otherwise accessed. The information sources used, like /proc/meminfo, are normally accessible. However, a system administrator could restrict access to functions that read files outside the home directory.

If thrown, the exception message should give you enough information to figure out what is the problem. You can extend and override the System and Mount classes if you have a special setup that is not covered.