There doesn't seem to be any way for a php script to determine whether a
given key exists in an array. isset($arr['x']) fails when it exists but
has a null value. I know there are ways around it like using foreach or
array_keys but these don't seem very efficient.
I would like to add a function key_exists, with the following proto:
bool key_exists(array search, string key)
Please let me know if this is inappropriate or I have missed something
obvious, otherwise I shall add this tomorrow. Thanks,
David.
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David Croft
Infotrek
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