Please go through the HTML Example before doing this example.

Create a sample php file

1. Using nano, we can create tutorial.php:

   [username@l-lnx101 username]$ nano tutorial.php

2. Copy and paste the following code into your nano screen:

   <?php
   $ip=$_SERVER["REMOTE_ADDR"];
   print "REMOTE_ADDR is $ip";
   $userhost= gethostbyaddr($_SERVER["REMOTE_ADDR"]);
   print "<br>\n";
   print "Lookup of $ip is <strong>$userhost</strong>\n";
   ?>

3. Save the file and go to http://webdev.cs.uiowa.edu/webdev/COURSEID/USERNAME/tutorial.php where COURSEID and USERNAME are replaced with your course number and hawkid.

4. The page when viewed on l-lnx100 in the lab looks like:

   REMOTE_ADDR is 128.255.44.124
   Lookup of 128.255.44.124 is l-lnx100.divms.uiowa.edu