Detecting Browser in PHP

[TWTCommish]

Hi,

I'm using the $HTTP_USER_AGENT variable on my page to detect the user's browser. It returns something like this:

Mozilla/4.0 (compatible; MSIE 4.01; Windows 98; Compaq)

I'm trying to use a simple if statement to display a block of code if the user is using Netscape, and another if the user is using IE - however given the complex nature of that block of text in bold, I'm not sure where to go from here.

All help is appreciated.

[Karl]

Try this (blatantly pinched from the PHP Manual I might add):

<?php
function list_array ($array) {
    while (list ($key, $value) = each ($array)) {
    $str .= "<b>$key:</b> $value<br>\n";
    }
    return $str;
}
echo "$HTTP_USER_AGENT<hr>\n";
$browser = get_browser();
echo list_array ((array) $browser);
?>

The core bit is get_browser(), this will only work though if your host has installed the browscap.ini file, it works in PHP3 and PHP4 (I think it was broken in PHP4 until 4.0.3pl1).

If it doesn't work then you can try this:

	if ( eregi( "MSIE ([[:digit:]]*\.[[:alnum:]]*)", $HTTP_USER_AGENT, $aRegs ) ) {
	
		$agent[name] = "ie";
		$agent[version] = $aRegs[1];
	
	} elseif ( eregi ( "Mozilla/([[:digit:]]*\.[[:digit:]][[:alnum:]]*).*Gecko", $HTTP_USER_AGENT, $aRegs ) ) {

		$agent[name] = "moz";
		$agent[version] = $aRegs[1];		

	} elseif ( eregi ( "Mozilla/([[:digit:]]*\.[[:digit:]][[:alnum:]]*).*\(.*; [IU]", $HTTP_USER_AGENT, $aRegs ) ) {
	
		$agent[name] = "nav";
		$agent[version] = $aRegs[1];
	
	} elseif ( eregi ( "Opera.([[:digit:]]*\.[[:alnum:]]*)", $HTTP_USER_AGENT, $aRegs ) ) {
	
		$agent[name] = "opera";
		$agent[version] = $aRegs[1];	
	
	}

Hope this helps you out. If you want the code by email (cos vB has probably trashed it) then let me know.

[TWTCommish]

Email would be great: chris@mycoding.com - I admit this is above my level of programming - does the block of code I mentioned simply go inside each if/elseif statement?