in reply to do we have certification for perl

To summarize what has been said time and time again: yes, there exists Perl certification and no, it is not worth the paper it is written on.

CountZero

A program should be light and agile, its subroutines connected like a string of pearls. The spirit and intent of the program should be retained throughout. There should be neither too little or too much, neither needless loops nor useless variables, neither lack of structure nor overwhelming rigidity." - The Tao of Programming, 4.1 - Geoffrey James