Posted by ELINTPimp on 08/20/07 12:10

> > - Can I know if a key is used?
> > Something like in_array() but for the key, not for the value.
>
> Sure, like this:
>
> if (isset($array["key"])) {
> // do something
>
> }
>
> http://php.net/isset

array_key_exists()

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