Generates a random UserAgent string

cuseragent.php

<?php
$userAgents = array(
	//	Mozilla Firefox:
	'Mozilla/5.0 (X11; Linux i686; rv:2.0) Gecko/20100101 Firefox/4.0',
	'Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.13) Gecko/20101211 Namoroka/3.6.13',
	'Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.13) Gecko/20101230 Mandriva Linux/1.9.2.13-0.2mdv2010.2 (2010.2) Firefox/3.6.13',
	'Mozilla/5.0 (Windows; U; Windows NT 6.1; nl; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13',
	//	Google Chrome:
	'Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_6; en-US) AppleWebKit/534.16 (KHTML, like Gecko) Chrome/10.0.648.133 Safari/534.16',
	'Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US) AppleWebKit/533.1 (KHTML, like Gecko) Chrome/5.0.322.2 Safari/533.1',
	'Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US) AppleWebKit/532.0 (KHTML, like Gecko) Chrome/3.0.198.0 Safari/532.0',
	// IE:
	'Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; WOW64; Trident/5.0)',
	'Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; Tablet PC 2.0; .NET CLR 1.1.4322; .NET CLR 3.0.04506; eMusic DLM/4; OfficeLiveConnector.1.3; OfficeLiveConnector.1.4; OfficeLivePatch.0.0; OfficeLivePatch.1.3; SLCC1; .NET4.0C; .NET4.0E; InfoPath.3; Zune 4.7; MS-RTC LM 8; yie8)',
	'Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; GTB6.4; .NET CLR 1.1.4322; FDM; .NET CLR 2.0.50727; .NET CLR 3.0.04506.30; .NET CLR 3.0.4506.2152; .NET CLR 3.5.30729)',
	// Safari:
	'Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10_6_6; en-us) AppleWebKit/533.20.25 (KHTML, like Gecko) Version/5.0.4 Safari/533.20.27',
	'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/531.21.8 (KHTML, like Gecko) Version/4.0.4 Safari/531.21.10',
	'Mozilla/5.0 (iPod; U; CPU like Mac OS X; en) AppleWebKit/420.1 (KHTML, like Gecko) Version/3.0 Mobile/3A100a Safari/419.3',
	// Opera:
	'Opera/9.80 (Windows NT 6.0; U; en) Presto/2.7.62 Version/11.00',
	'Opera/9.80 (X11; Linux i686; U; en-GB) Presto/2.6.30 Version/10.62',
	'Opera/9.80 (Macintosh; Intel Mac OS X; U; en) Presto/2.6.30 Version/10.61',
	'Opera/9.80 (J2ME/MIDP; Opera Mini/5.1.21214/19.916; U; en) Presto/2.5.25',
	'Opera/9.80 (Windows NT 6.0; U; en) Presto/2.5.22 Version/10.50',
);
$min=0;
$max=count($userAgents) - 1;
$index=rand($min, $max);
$userAgent=$userAgents[$index];
$userAgents=null;
unset($userAgents);
return $userAgent;