Josh Mckibbin

The <a href="https://kibb.in/sphp" rel="nofollow ugc">Simple PHP Info</a> plugin allows you to view the phpinfo table in a dashboard widget. It also includes a shortcode that allows you to insert the phpinfo table into any post or page.
<h3>Simple PHP Info Settings</h3>
<ul>
<li>Enable the Dashboard Widget: Whether or not to show the dashboard widget (Defaults to Yes)</li>
<li>Enable the Shortcode: Whether or not to enable the shortcode (Default to Yes)</li>
</ul>

Simple PHP Info

Displays the phpinfo() table in the WordPress dashboard and creates a shortcode for use in posts and pages.

ray.viljoen

Fubra

Adds custom menu under WordPress Admin to view all PHP info as produced with the standard phpinfo function, but without breaking the page strucure.
Developed by <a href="http://www.catn.com" rel="nofollow ugc">PHP Hosting Experts CatN</a>

PHP Server Info

A very simple plugin for displaying full PHP Info from within the WordPress Admin menu.

Simple PHP Info vs PHP Server Info