HTTP_USER_AGENT question/comparison

[shamwowy]

Hi all. I'm trying to redirect a user if and only if they are using Safari 5.0.5 or below (both Win and Mac). The code is thus:

if ($_SERVER['HTTP_USER_AGENT'] <= 'Safari V. 5.0.5 and lower');   //what should the second half of this line look like?
{
     header( 'location:http://mydomain.com/safari.php' );
}

 

I'm not really sure if there's a nifty RegEx way to do this, and also I don't really know how to do an <= comparison given the http_user_agent returns a giant string of madness. A bunch of my users are stuck with Safari 5.0.5 and can't update to latest, and those versions don't support some of my CSS3 calls.

 

Any help would be most appreciated.

[voip03]

<?php
echo $_SERVER['HTTP_USER_AGENT'] . "\n\n";

$browser = get_browser(null, true);
print_r($browser);
?> 

can u get the print out

[Morg.]

Well, it's simple

 

 	$bad_user_agent_regex_list="Opera 5.5|Opera 5.4| etc.";
$t=preg_match("/($bad_user_agent_regex_list)/i",$_SERVER['HTTP_USER_AGENT']);
if($t==false || $t==0){
	// woot no match, this should be good ?
}

[shamwowy]

Mozilla/5.0 (Windows NT 5.1) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50

 

My issue with the string above is that it seems to be saying Safari version 5.1. Does anyone have an older install of Safari maybe that can show me a different safari string? Or is the number 534.50 above the actual versioning number that I should be concerned with?