https://www.w3schools.com/pHP/func_string_strnatcmp.asp
PHP strnatcmp() Function
Well organized and easy to understand Web building tutorials with lots of examples of how to use HTML, CSS, JavaScript, SQL, Python, PHP, Bootstrap, Java, XML...
phpstrnatcmpfunction
https://simonwillison.net/2004/Jun/9/strnatcmppy/
strnatcmp.py
Perform 'natural order' comparisons of strings in python.
strnatcmppy