Project: SS_Validator
Title: PHP Validation library
License: MIT
Description: PHP library for all validation tasks. Simple enough for beginners but still very useful for experts.
Target PHP version: 5.2.4 (without namespaces)

Qs: Why older php?
Ans: I want to use it in my WordPress themes and plugins and WordPress still uses PHP 5.2.4

Qs: Why invent the wheel from scratch?
Ans: Not really. Most of the code is quick and inspired. I want to make sure this works with PHP 5.2.4 and Validation rules support json, yaml and associative arrays.