Posted By

aristoworks on 12/23/08

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php
browser

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Last Edited at 12/23/08 07:54pm

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PHP Firefox Detector

/ Published in: PHP

This handy little script will allow you to detect whether or not a user is running FireFox as their browser.

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Copy this code and paste it in your HTML

function is_firefox() {
	$agent = '';
	// old php user agent can be found here
	if (!empty($HTTP_USER_AGENT))
		$agent = $HTTP_USER_AGENT;
	// newer versions of php do have useragent here.
	if (empty($agent) && !empty($_SERVER["HTTP_USER_AGENT"]))
		$agent = $_SERVER["HTTP_USER_AGENT"];
	if (!empty($agent) && preg_match("/firefox/si", $agent))
		return true;
	return false;
}