This question on ‘How to tell if a PHP array is empty‘ had me thinking of this question
Is there a reason that
count should be used instead of
empty when determining if an array is empty or not?
My personal thought would be if the 2 are equivalent for the case of empty arrays you should use
empty because it gives a boolean answer to a boolean question. From the question linked above, it seems that
count($var) == 0 is the popular method. To me, while technically correct, makes no sense. E.g. Q: $var, are you empty? A: 7. Hmmm…
Is there a reason I should use
count == 0 instead or just a matter of personal taste?
As pointed out by others in comments for a now deleted answer,
count will have performance impacts for large arrays because it will have to count all elements, whereas
empty can stop as soon as it knows it isn’t empty. So, if they give the same results in this case, but
count is potentially inefficient, why would we ever use
count($var) == 0?
I generally use
empty. Im not sure why people would use count really – If the array is large then count takes longer/has more overhead. If you simply need to know whether or not the array is empty then use empty.
Answered By – prodigitalson
Answer Checked By – Jay B. (BugsFixing Admin)