ReorMadrid

To use it, you must use the [code] shortcode like this:
PHP Code Example:
[easycode] 
< ? php 
e cho “Hi, world!”; 
 ? > 
[/easycode]
In the admin menu, you have options to change the background colors, button colors, language and more.

Easy Code Highlighter

Displays code with syntax highlighting using Prism.js, real line numbering, and a copy button.

Shaikh Masood Alam

This plugin uses the Prism.JS to Highlight & Style Code
The plugin also adds styling to the existing prism Quick tag in your WordPress text editor.
Languages Supported:
<ul>
<li>Markup</li>
<li>CSS</li>
<li>C-like</li>
<li>JavaScript</li>
<li>PHP</li>
</ul>

Prism Highlight

Styles Your Code With Prism.JS, a Lightest Code Highlighter.

Easy Code Highlighter vs Prism Highlight