<?php
 
 
 namespace MVC\Classe;
 
 
 class Browser
 {
 
     public $user;
     public $userAgent;
 
     public function __construct()
     {
 
         $this->userAgent = $_SERVER['HTTP_USER_AGENT'];
         $this->user = $this->get_browser_name();
     }
 
     protected function get_browser_name()
     {
 
         // Make case insensitive.
         $t = strtolower($this->userAgent);
 
         // If the string *starts* with the string, strpos returns 0 (i.e., FALSE). Do a ghetto hack and start with a space.
         // "[strpos()] may return Boolean FALSE, but may also return a non-Boolean value which evaluates to FALSE."
         //     http://php.net/manual/en/function.strpos.php
         $t = " " . $t;
 
         // Humans / Regular Users
         if (strpos($t, 'opera') || strpos($t, 'opr/')) return 'Opera';
         elseif (strpos($t, 'edge')) return 'Edge';
         elseif (strpos($t, 'chrome')) return 'Chrome';
         elseif (strpos($t, 'safari')) return 'Safari';
         elseif (strpos($t, 'firefox')) return 'Firefox';
         elseif (strpos($t, 'msie') || strpos($t, 'trident/7')) return 'Internet Explorer';
 
         // Application Users
         elseif (strpos($t, 'curl')) return '[App] Curl';
 
         // Search Engines
         elseif (strpos($t, 'google')) return '[Bot] Googlebot';
         elseif (strpos($t, 'bing')) return '[Bot] Bingbot';
         elseif (strpos($t, 'slurp')) return '[Bot] Yahoo! Slurp';
         elseif (strpos($t, 'duckduckgo')) return '[Bot] DuckDuckBot';
         elseif (strpos($t, 'baidu')) return '[Bot] Baidu';
         elseif (strpos($t, 'yandex')) return '[Bot] Yandex';
         elseif (strpos($t, 'sogou')) return '[Bot] Sogou';
         elseif (strpos($t, 'exabot')) return '[Bot] Exabot';
         elseif (strpos($t, 'msn')) return '[Bot] MSN';
 
         // Common Tools and Bots
         elseif (strpos($t, 'mj12bot')) return '[Bot] Majestic';
         elseif (strpos($t, 'ahrefs')) return '[Bot] Ahrefs';
         elseif (strpos($t, 'semrush')) return '[Bot] SEMRush';
         elseif (strpos($t, 'rogerbot') || strpos($t, 'dotbot')) return '[Bot] Moz or OpenSiteExplorer';
         elseif (strpos($t, 'frog') || strpos($t, 'screaming')) return '[Bot] Screaming Frog';
 
         // Miscellaneous
         elseif (strpos($t, 'facebook')) return '[Bot] Facebook';
         elseif (strpos($t, 'pinterest')) return '[Bot] Pinterest';
 
         // Check for strings commonly used in bot user agents
         elseif (strpos($t, 'crawler') || strpos($t, 'api') ||
             strpos($t, 'spider') || strpos($t, 'http') ||
             strpos($t, 'bot') || strpos($t, 'archive') ||
             strpos($t, 'info') || strpos($t, 'data')) return '[Bot] Other';
 
         return 'Other (Unknown)';
     }
 
     public function isBot()
     {
         if (preg_match('#Bot#', $this->user)) {
             return true;
         } else {
             return false;
         }
     }
 
     // Alternative TO https://www.php.net/manual/fr/function.get-browser.php
     // Function written and tested December, 2018
 
     public function isAppRequest()
     {
         if (preg_match('#App#', $this->user)) {
             return true;
         } else {
             return false;
         }
     }
 }