note 125480 added to tutorial.useful

<?php echo $_SERVER['HTTP_USER_AGENT']; ?> Output of Google Chrome: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36 Output of Microsoft Edge: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.102 Safari/537.36 Edge/18.18362 The USER AGENT string is a text that the browsers themselves send to the webserver to identify themselves, so that websites can send different content based on the browser or based on browser compatibility. Mozilla is a browser rendering engine (the one at the core of Firefox) and the fact that Chrome and IE contain the string Mozilla/5.0 identifies them as being compatible with that rendering engine. ---- Server IP: 45.112.84.4 Probable Submitter: 185.85.3.174 (proxied: 37.111.205.135) ---- Manual Page -- http://php.net/manual/en/tutorial.useful.php Edit -- https://master.php.net/note/edit/125480 Del: integrated -- https://master.php.net/note/delete/125480/integrated Del: useless -- https://master.php.net/note/delete/125480/useless Del: bad code -- https://master.php.net/note/delete/125480/bad+code Del: spam -- https://master.php.net/note/delete/125480/spam Del: non-english -- https://master.php.net/note/delete/125480/non-english Del: in docs -- https://master.php.net/note/delete/125480/in+docs Del: other reasons-- https://master.php.net/note/delete/125480 Reject -- https://master.php.net/note/reject/125480 Search -- https://master.php.net/manage/user-notes.php