Am 02.07.2013 18:47, schrieb Brion Vibber: > On Tue, Jul 2, 2013 at 9:40 AM, Thomas Gries <m...@tgries.de> wrote: > >> PHP codestyle question re. isset( $array['key'][0] ) versus >> array_key_exists( 0, $array['key'] ) >> >> On a recent patch [1], we had a discussion what is - or may be - better >> >> * isset( $array['key'][0] ) >> * array_key_exists( 0, $array['key'] ) >> > In my opinion, isset() is usually clearer and "more natural", in part > because you don't have to guess/memorize the order of parameters (which is > haystack again, and which is needle?). > > There is however a functional difference: if your array can contain null as > a valid value, then isset() can give you a false negative. So beware... > > -- brion In the present case of E:OpenID, I need to check the data of an array which has been read in from the Provider. In my view, it appears to be more secure to use array_key_exists( ).
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