Pavel

The “Light Code Block” plugin is a simple and lightweight solution for inserting and displaying code snippets in posts and pages. 
It works by adding a custom “LC” button to the TinyMCE (Classic) editor or a code block in the Gutenberg editor.
The inserted code will be shown on the front end in a clean, readable format.
<h3>Usage</h3>
<ul>
<li>Install and activate the plugin.</li>
<li>Go to the post or page edit screen.</li>
<li>In the TinyMCE (Classic) editor, click the “LC” button in the toolbar.</li>
<li>In the popup window that opens, paste or write your code, and click OK.</li>
<li>Save or update your post.</li>
</ul>
The code will be saved inside a special block and displayed on the front end within a <code><pre></code> tag with the class <code>mce-simple-code-block</code> (i.e., <code><pre class="mce-simple-code-block">...</pre></code>).
To insert code using the Gutenberg editor, you first need to add a Classic (TinyMCE) block, and then use it to insert your code.

Light Code Block

The "Light Code Block" plugin is the simplest and lightest plugin for inserting and displaying code.

cballou

PHPull is a WordPress plugin for developers who wish to easily and accurately reference php functions directly from the PHP.net website. The plugin is very easy to use and the tooltip display is easily customizable by updating an existing stylesheet theme or creating your own. More detailed information and examples can be found on the official plugin homepage, linked below.
Credit goes out to S.C. Chen for his Simple HTML DOM class that was used in this plugin. For more information on this class, please visit http://sourceforge.net/projects/simplehtmldom/.
Credit also goes out to Michael Leigeber for his amazingly lightweight tooltip javascript code. For more information on this class, please visit http://www.leigeber.com/2008/06/javascript-tooltip/. Michael also has a wonderful blog.
Related Links:
<ul>
<li><a href="http://www.jqueryin.com/projects/phpull/" title="PHPull WordPress Plugin" rel="nofollow ugc">Official Plugin Homepage</a></li>
<li><a href="http://github.com/jqueryin/PHPull/archives/master" rel="nofollow ugc">PHPull on Github</a></li>
<li><a href="https://wordpress.org/tags/phpull" rel="ugc">PHPull Support Forum</a></li>
</ul>
Change Log
<ul>
<li>1.0 – Support for Firefox 2/3, IE 6/7/8, Safari 3/4, class support</li>
</ul>

PHPull

Easily reference a PHP function and have it displayed in a styled tooltip on hover.

Light Code Block vs PHPull