On Fri, March 9, 2012 5:58 pm, John Crenshaw wrote:
> The reason you have to validate the input type in this case is because
> even though it is a reference, we don't ACTALLY know that it isn't
> supposed to contain an input (even though that would be against all
> sane rules most of the time).
Last time I checked, two consecutive "exec" calls with the same second
argument would append to the array of outputs.
Hey, it's even documented that way:
http://www.php.net/manual/en/function.exec.php
It was unexpected when I first saw it, but seemed perfectly sane to
me, as I suppose somebody might want it, and unset($output); wasn't
exactly horrible to add before each "exec" call.
It would be wise to check other PHP function with references returned
to sanity check your definition of sane :-)
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