xbd_object.php

<?php
/*
$Id: v 1.4 2009/12/08 11:22:00 $

<XBD, Extended Browser Detection.>
Copyright (C) <2009>  <Guillermo Azurdia, www.nopticon.com>

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

function _print($name, $ret) {
	echo $name . '<br />';

	if (!f($ret)) {
		$ret = 'false';
	} elseif ($ret == '1') {
		$ret = 'true';
	}

	echo '<blockquote><pre>';
	print_r($ret);
	echo '</pre></blockquote>';

	return;
}

function f($s) {
	return !empty($s);
}

function w($a = '', $d = false) {
	if (!f($a) || !is_string($a)) return array();

	$e = explode(' ', $a);
	if ($d !== false) {
		foreach ($e as $i => $v) {
			$e[$v] = $d;
			unset($e[$i]);
		}
	}

	return $e;
}

class xbd {
	private $browser_list, $browser_type, $platforms, $agent, $http;

	public function __construct() {
		/*
		If you want to add more browsers, do it but be careful... order matters.
		*/
		$this->browser_list  = 'nokia motorola samsung sonyericsson blackberry iphone htc ';
		$this->browser_list .= 'flock firefox konqueror lobo msie netscape navigator mosaic netsurf lynx amaya omniweb ';
		$this->browser_list .= 'googlebot googlebot-image feedfetcher-google gigabot msnbot thunderbird fennec minimo ';
		$this->browser_list .= 'minefield chrome wget cheshire safari avant camino seamonkey aol bloglines ';
		$this->browser_list .= 'wii playstation netfront opera mozilla gecko ubuntu';

		$this->browser_type = array(
			'mobile' => 'nokia motorola samsung sonyericsson blackberry iphone fennec minimo htc',
			'console' => 'wii playstation',
			'bot' => 'googlebot googlebot-image feedfetcher-google gigabot msnbot bloglines'
		);

		$this->platforms = array(
			'linux' => w('linux'),
			'mac' => array('macintosh', 'mac platform x', 'mac os x'),
			'windows' => w('windows win32')
		);

		$this->agent = strtolower($this->v('HTTP_USER_AGENT'));

		return;
	}

	private function v($a) {
		if (!isset($this->http[$a])) {
			$this->http[$a] = (isset($_SERVER[$a])) ? $_SERVER[$a] : '';
		}
		return $this->http[$a];
	}

	public function _browser($a_browser = false, $a_version = false, $name = false, $d_name = false, $ret_ary = false) {
		$user_browser = $this->agent;
		$this_version = $this_browser = $this_platform = '';

		if ($a_browser == '*') {
			$a_browser = $a_version = $name = false;
			$d_name = true;
		}

		if ($a_browser === false && $a_version === false && $name === false && $d_name !== false) {
			return $user_agent;
		}

		foreach (w('user_browser a_browser a_version name d_name') as $row) {
			$vrow = ${$row};
			if (is_string($vrow)) {
				${$row} = strtolower($vrow);
			}
		}

		$browser_limit = strlen($user_browser);
		foreach (w($browser_list) as $row) {
			$row = ($a_browser !== false) ? $a_browser : $row;
			$n = stristr($user_browser, $row);
			if (!$n || f($this_browser)) continue;

			$this_browser = $row;
			$j = strpos($user_browser, $row) + strlen($row);
			$j2 = substr($user_browser, $j, 1);
			if (preg_match('#[\/\_\-\ ]#', $j2)) {
				$j += 1;
			}

			for (; $j <= $browser_limit; $j++) {
				$s = trim(substr($user_browser, $j, 1));
				if (!preg_match('/[\w\.\-]/', $s)) break;

				$this_version .= $s;
			}
		}

		if ($a_browser !== false && ($d_name === false || $name === true) && $ret_ary === false) {
			$ret = false;
			if (strtolower($a_browser) == $this_browser) {
				$ret = true;
				if ($a_version !== false) {
					if (f($this_version)) {
						$a_sign = explode(' ', $a_version);
						if (version_compare($this_version, $a_sign[1], $a_sign[0]) === false) {
							$ret = false;
							$vf = true;
						}
					} else {
						$ret = false;
					}
				}
			}

			if ($name !== true) {
				return $ret;
			}
		}

		foreach ($platforms as $os => $match) {
			foreach ($match as $os_name) {
				if (strpos($user_browser, $os_name) !== false) {
					$this_platform = $os;
					break 2;
				}
			}
		}

		$this_type = '';
		if (f($this_browser)) {
			foreach ($browser_type as $type => $browsers) {
				foreach (w($browsers) as $row) {
					if (strpos($this_browser, $row) !== false) {
						$this_type = $type;
						break 2;
					}
				}
			}

			if (!$this_type) $this_type = 'desktop';
		}

		if ($name !== false && $ret_ary === false) {
			if ($a_browser !== false && $a_version !== false && $ret === false) {
				return false;
			}

			$s_browser = '';
			$s_data = array($this_type, $this_platform, $this_browser, $this_version);
			foreach ($s_data as $row) {
				if (f($row)) $s_browser .= (($s_browser != '') ? ' ' : '') . $row;
			}

			return $s_browser;
		}

		return array(
			'browser' => $this_browser,
			'version' => $this_version,
			'platform' => $this_platform,
			'type' => $this_type,
			'useragent' => $user_browser
		);
	}
}