计算数组中非空项的数量？ [重复]

Question

Possible Duplicate:
how to count non-empty entries in php array?

I want to count the number of keys in an array that aren't empty/null.

EG:
array(1>'asdf',2>'fdas',3>'');

count($array) would return 3, I want a function that returns 2 as 3 is empty

Are there any php built in functions to do this? How can it be done?

Answer 1

Use:

count(array_filter($array));

array array_filter ( array $input [, callable $callback = "" ] )

If no callback is supplied, all entries of input equal to FALSE (see converting to boolean) will be removed.