php – The unofficial WordPress Plugin Directory

Byte's PHP Code Widget

Mix HTML and PHP in a widget with mobile support.

Display WordPress, PHP, Web Server, MySQL and Theme versions in wp-admin footer.

This plugin displays a horizontal timeline of posts in your page/post.

Display the currently PHP-MYSQL version at the end of "At a Glance" admin dashboard widget

Improve OPcache compatibility with WordPress

Limits the multiple login sessions from same account.

Añade funcionalidad al sitio mediante código desde la administración.

Easily use highlightjs and line-numbers to syntax-highlighted sample code on your blog posts

Storing and evaluating PHP scripts within WordPress administration.