Learn PHP Array Programming for User Agent Script : Get User Browser and OS

Learn PHP Array Programming for User Agent Script : Get User Browser and OS

Listening Video

Learn how to program arrays in PHP at a basic enough level to make an efficient user agent sniff script. We use a foreach loop to run the evaluation needed for finding a match in the user agent string.

COPY + PASTE VERSION - http://sh.st/aqisN

Be sure to view the video guide below documenting creation of this file for full understanding.

<?php

/* ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ */

/* Script written by Adam Khoury at www.developphp.com */

/* VIDEO GUIDE - http://www.developphp.com/view.php?tid=1057 */

/* See video guide above for full explanation if you want full understanding */

/* ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ */

// 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>";

?>

 click here to code. 

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