标准/可读数组声明和使用

Question

what in your opinion more standard / readable / efficient code of array declaration :

one way :

$days = array(1=>'Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat');

then use : $days[$value]

or the second way :

$days = array('Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat');

then use : $days[$value-1]

update : i cant sure that the values be in [0-6] , because that i dont offer 3 way.

Answer 1

Definitely the first one (when keys are correctly defined).

In the second one you need to do a minus (extract) this is an unnecessary cpu cycle makes your code less readable and less maintenable.

Edit: I hope all of you lazy programmers are happy out there.