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Browser and Operating System Detect Array Script

Learn how to program arrays in PHP at a basic enough level to make an efficient browser sniffing script. We run loops over the arrays to perform the evaluations needed for finding a match in the user agent string and OS string. <?php // Script written by Adam Khoury at www.developphp.com // VIDEO GUIDE - http://www.developphp.com/view.php?tid=1057 // ---------------------------------------------------------------------------------------- // Obtain user agent which is a long string not meant for human reading $agent = $_SERVER['HTTP_USER_AGENT']; // Get the user Browser now ----------------------------------------------------- // Create the Associative Array for the browsers we want to sniff out $browserArray = array( 'Windows Mobile' => 'IEMobile', 'Android Mobile' => 'Android', 'iPhone Mobile' => 'iPhone', 'Firefox' => 'Firefox', 'Google Chrome' => 'Chrome', 'Internet Explorer' => 'MSIE', 'Opera' => 'Opera', 'Safari' => 'Safari' ); foreach ($browserArray as $k => $v) { if (preg_match("/$v/", $agent)) { break; } else { $k = "Browser Unknown"; } } $browser = $k; // Get the user OS now ------------------------------------------------------------ // Create the Associative Array for the Operating Systems to sniff out $osArray = array( 'Windows 98' => '(Win98)|(Windows 98)', 'Windows 2000' => '(Windows 2000)|(Windows NT 5.0)', 'Windows ME' => 'Windows ME', 'Windows XP' => '(Windows XP)|(Windows NT 5.1)', 'Windows Vista' => 'Windows NT 6.0', 'Windows 7' => '(Windows NT 6.1)|(Windows NT 7.0)', 'Windows NT 4.0' => '(WinNT)|(Windows NT 4.0)|(WinNT4.0)|(Windows NT)', 'Linux' => '(X11)|(Linux)', 'Mac OS' => '(Mac_PowerPC)|(Macintosh)|(Mac OS)' ); foreach ($osArray as $k => $v) { if (preg_match("/$v/", $agent)) { break; } else { $k = "Unknown OS"; } } $os = $k; // At this point you can do what you wish with both the OS and browser acquired echo '<h1>PHP Tutorial : Get User Browser and Operating System Using Arrays</h1>'; echo $agent; echo "<h2>You are using: <em>$browser - $os</em></h2>"; ?>
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