This was recently updated to include viewing phpinfo with in your admin panel instead of just a link to it.
Please see this article if you are interested in phpinfo within your admin panel:
Updated Php Info from Admin Panel
Since the release of Dolphin 6.1.0 a convenient phpinfo file has been included in your admin directory/folder. It is protected and you either have to be logged into your admin panel or if you access it directly you will be prompted for a login/password.
Since it is there and protected why not add a link to it in your admin panel itself for easier access.
This can is very simple and only takes a few moments.
If you want to add a nice little icon like all the others in your admin panel download this icon/.gif and upload it to the appropriate directory.
Download the admin panel icon/.gif
Now lets add the link. First log into your Admin Panel.
On the left column just under logout find and click on the little wrench looking icon for adminMenuCompose.php
Towards the bottom of your screen drag a "New Item" block up in the "All Items" area to "settings".
Click on the center of this "New Item" and enter:
Title: PHP Info
click save changes
Refresh your admin panel page in your browser to update the changes.
Now click on the Settings link in the left column of your admin panel and you should have PHP Info option.
Click on this to review your hosts php settings.
This can be used to determine if register globals is on or off. What your upload limits are and a number of other settings.
This phpinfo.php file is protected by so there is very little concern about others viewing this file. It is only included with Dolphin 6.1.0+, and was not available or included with previous versions. You can still do this with previous versions by copying the phpinfo.php from the latest release to your admin directory/folder.
You should see something like this.
This is a sample screen shot of what you would see when accessing your phpinfo file.