I am using $_SERVER['HTTP_USER_AGENT']
to record the user's browser and operating system in use after he logs in my website, when I echo
this it shows me these
Firefox
Mozilla/5.0 (Windows NT 6.1; rv:10.0.2) Gecko/20100101 Firefox/10.0.2
Chrome
Mozilla/5.0 (Windows NT 6.1) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.162 Safari/535.19
Safari
Mozilla/5.0 (Windows NT 6.1) AppleWebKit/534.50 (KHTML, like Gecko) Version/5.1 Safari/534.50
Opera
Opera/9.80 (Windows NT 6.1; U; en) Presto/2.9.168 Version/11.50
IE
Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)
I'm interested to know why Mozilla/5.0 is prefixed when I echo
it in IE, Safari And Chrome?