f - php helpers functions

A collection of essential PHP helper functions for everyday programming organized in abstract classes.

f\arr namespace contains array related utility functions.
f\dev namespace contains debugging/developing functions.
f\dir namespace contains file system functions.
f\http namespace contains http functions.
f\num namespace contains numeral utility functions.
f\str namespace contains string/text related utility functions.
f\tmp namespace contains temporal (date/time) related utility functions