grav-labonneadresse.graphics/system/src/Grav/Common/Browser.php

<?php
namespace Grav\Common;

/**
 * Simple wrapper for the very simple parse_user_agent() function
 */
class Browser
{

    protected $useragent = [];

    public function __construct()
    {
        try {
            $this->useragent = parse_user_agent();
        } catch (\InvalidArgumentException $e) {
            $this->useragent = parse_user_agent("Mozilla/5.0 (compatible; Unknown;)");
        }
    }

    public function getBrowser()
    {
        return strtolower($this->useragent['browser']);
    }

    public function getPlatform()
    {
        return strtolower($this->useragent['platform']);
    }

    public function getLongVersion()
    {
        return $this->useragent['version'];
    }

    public function getVersion()
    {
        $version = explode('.', $this->getLongVersion());
        return intval($version[0]);
    }

    /**
     * Determine if the request comes from a human, or from a bot/crawler
     */
    public function isHuman()
    {
        $browser = $this->getBrowser();
        if (empty($browser)) {
            return false;
        }

        if (preg_match('~(bot|crawl)~i', $browser)) {
            return false;
        }

        return true;
    }
}