If you've been asked to look into your phpinfo or provide a link to it and you dont know what does that mean, here is a little explanation.
phpinfo is a function in PHP that shows the information about the PHP on your server. To get that information simply create a new text file phpinfo.php (the name is your choice, make sure extension is php) with the following contents:<?php
phpinfo();
?>
Then upload this file to your web server and execute it by typing in the address bar: http://your address/path/to/phpinfo/file/phpinfo.php
It should show you the PHP settings on your server.
Update
Since v1.7.2 phpinfo() can be found in ACP (Admin Control Panel)