On Wed, Mar 13, 2013 at 5:10 PM, Sebastian Krebs <krebs....@gmail.com>wrote:

> Because 'null' is the representation of "nothing" array_key_exists() and
> isset() can be treated as semantically equivalent.

As I said, these functions return different results for null values. It
won't matter for Angela since she isn't storing null in the array, though.


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