Is there a function out there to make sure that any given array conforms to a particular structure? What I mean is that is has particular key names, perhaps particular types for values, and whatever nested structure.
Right now I have a place where I want to make sure that the array getting past has certain keys, a couple holding a certain data type, and one sub-array with particular key names. I've done a lot of run-around because I was passing malformed arrays to it, and finally I'm at the point where I have a bunch of
if ( ! isset($arr['key1']) ) { .... }
if ( ! isset($arr['key2']) ) { .... }
if ( ! isset($arr['key3']) ) { .... }
I would have saved a lot of time and consternation if I could have checked that the array conformed to a particular structure beforehand. Ideally something like
$arrModel = array(
'key1' => NULL ,
'key2' => int ,
'key3' => array(
'key1' => NULL ,
'key2' => NULL ,
),
);
if ( ! validate_array( $arrModel, $arrCandidate ) ) { ... }
So, the question I'm asking is, does this already exists, or do I write this myself?
