I just ran into a situation for a Drupal/PHP client where I wanted to log some access information. There was some unusual access activity on the website, and I want to log IP addresses and URLs for a few days.
As part of that, I wanted to get the web client's IP address, and in PHP you get the client IP address like this:
$ip = $_SERVER['REMOTE_ADDR'];
That returns something like this:
If you just need to get a web client's IP address from a PHP script, that's all you need.
Some extra PHP and Drupal logging
FWIW, if you ever need to log information like this, here's a trimmed-down version of some PHP code I wrote for a Drupal 6 website. I'm basically just getting the client IP address (the user's IP address), the Drupal URI they're accessing, and some date/time information:
<?php # get the client's IP address $ip = $_SERVER['REMOTE_ADDR']; # get some date/time information $today = getdate(); $day = $today['weekday']; $month = $today['month']; $hour = $today['hours']; $minute = $today['minutes']; # get the drupal URI $curr_uri = check_plain(request_uri()); # create a string to print $format = "%s %s, %s:%s, %s, %s\n"; $text = sprintf($format, $month, $day, $hour, $minute, $ip, $curr_uri); # append the string to the log file $filename = '/tmp/temp.log'; $fp = fopen($filename, 'a'); fwrite($fp, $text); fclose($fp); ?>
This was on a Drupal 6 website, so I put that code into the theme's
page.tpl.php file, and it seems to be working fine. I forgot to get the "seconds" field on the timestamp, but other than that, this PHP snippet seems to be working fine.
FWIW, there are other ways to do this, but I didn't want to install a Drupal module, because (a) I didn't see a module that does exactly what I want, and (b) the modules I saw look like they had other dependencies, and (c) I suspect I'll only need this script for a short period of time.