<?php $title = "Basic Predefined Variables"; include '../head1.inc'; ?> PHP provides a large number of pre-defined variables which send information into the script. <p> Greetings, web surfer! You have reached here from <?php echo $_SERVER['REMOTE_ADDR']; ?> using <?php echo $_SERVER['HTTP_USER_AGENT']; ?>. You came here from <?php echo $_SERVER['HTTP_REFERER'];?>, and this page was delivered to you by the <?php echo $_SERVER['REQUEST_METHOD']; ?> method of HTTP. <p> <?php $r = $_SERVER['HTTP_REFERER']; echo "<a href=\"$r\"><i>Return</i></a>"; ?> </body> </html>