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@@ -918,6 +918,7 @@ Various resources, such as books, websites and articles, for improving your PHP
 * [Securing PHP: Core Concepts](https://leanpub.com/securingphp-coreconcepts) - A book about common security terms and practices for PHP by Chris Cornutt.
 * [Signaling PHP](https://leanpub.com/signalingphp) - A book about catching PCNTL signals in CLI scripts by Cal Evans.
 * [The Grumpy Programmer's Guide to Building Testable PHP Applications](https://leanpub.com/grumpy-testing) - A book about building testing PHP applications by Chris Hartjes.
+* [Thinking Functionally in PHP](https://leanpub.com/thinking-functionally-in-php/) - From functional basics to monads in one smooth ride, with just a pinch of math along the way.  Based on PHP 7.4 and later.
 * [XML Parsing with PHP](https://www.phparch.com/books/xml-parsing-with-php/) - This book covers parsing and validating XML documents, leveraging XPath expressions, and working with namespaces as well as how to create and modify XML files programmatically.
 
 ### PHP Videos