Re: empty function and array indices

Gabriel Birke wrote:

Hello! Suppose I have the following code: $a = array('a'=>1, 'b'=>2); echo empty($a['c'])?'empty':'not empty'; echo $a['c']; Why doesn't the 2nd line output a warning when error_reporting is set to E_ALL? Is empty() some kind of special function where the validity of indices is not checked? If that is the case, I have two questions:

1. Will this behavior persist in future versions of PHP?

Sure

2. Are there other functions or a general rule where PHP doesn't output warnings when a nonexistant index is given?

isset() as well for obvious reasons. -Rasmus