kioub

With support for the new block editor in WordPress 5.0!
SyntaxHighlighter Amplified allows you to easily post syntax-highlighted code to your site without losing its formatting or making any manual changes. It uses the <a href="https://github.com/scrivo/highlight.php" rel="nofollow ugc">highlight.php package by Geert Bergman</a> to render code on the server-side so it has no depedencies on extrenal Javascript libraries thus is compatible with AMP pages.
For a live demo, see <a href="https://www.javacodegeeks.com/syntaxhighlighter-amplified/" rel="nofollow ugc">this demo page</a>.
For a list of supported languages (most widely used languages are supported), see the <a href="http://en.support.wordpress.com/code/posting-source-code/" rel="nofollow ugc">WordPress.com support document</a>.
Development of this plugin is <a href="https://github.com/kioub78/syntaxhighlighter-amplified" rel="nofollow ugc">on GitHub</a>. See <a href="https://github.com/kioub78/syntaxhighlighter-amplified/issues" rel="nofollow ugc">list of current issues</a> with the plugin. Please feel free to file any additional issues or requests that you may come across. <a href="https://github.com/kioub78/syntaxhighlighter-amplified/pulls" rel="nofollow ugc">Pull requests</a> are welcome.
Translation of the plugin into different languages is on the <a href="https://translate.wordpress.org/projects/wp-plugins/syntaxhighlighter-amplified" rel="nofollow ugc">translation page</a>.
<h4>CREDITS</h4>
This is a fork of <a href="https://github.com/Automattic/syntaxhighlighter" rel="nofollow ugc">SyntaxHighligher Evolved</a> by <a href="https://alex.blog/" rel="nofollow ugc">Alex Mills</a> (Viper007Bond), which is also <a href="https://wordpress.org/plugins/syntaxhighlighter/" rel="ugc">available on WordPress.org</a>. Copyright (c) 2018 Alex Mills. Licensed under GPL 2.0 or later.
<a href="https://github.com/scrivo/highlight.php" rel="nofollow ugc">highlight.php</a> is released under the BSD 3-Clause License. Copyright © 2006-2013, Ivan Sagalaev (maniac@softwaremaniacs.org), highlight.js (original author). Copyright © 2013, Geert Bergman (geert@scrivo.nl), highlight.php

SyntaxHighlighter Amplified

Easily post syntax-highlighted code to your site without having to modify the code at all. Compatible with AMP pages.

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.

SyntaxHighlighter Amplified vs PHPull