I was fiddling around on a project and created this associative array implosion function that incorporates several of the ideas from the php.net documentation's entry on implode, but which also adds a whack of nifty options. Documentation and examples are included in-line.

This little object is a canned and generic validator for Zend Framework. It is intended for use with Form Elements, but it should work fairly broadly. The basic need it addresses is to validate that one field value matches another (e.g. password/email an associated validation field, a captcha challenge, etc.). I looked hard for a ready made answer to this issue, but after much searching and failed experimentation with other canned solutions I decided to write my OWN generic answer to the problem.