[Solved] How to counting varians data from array?

Question

You can flip the array, and check its length:

echo count(array_flip($arr));

This works because an array index must be unique, so you end up with one element for every unique item in the original array:

http://php.net/manual/en/function.array-flip.php

If a value has several occurrences, the latest key will be used as its value, and all others will be lost.

This is (was?) somewhat faster than array_unique, but unless you are calling this a LOT, array_unique is a lot more descriptive, so probably the better option

Accepted Answer

You can flip the array, and check its length:

echo count(array_flip($arr));

This works because an array index must be unique, so you end up with one element for every unique item in the original array:

http://php.net/manual/en/function.array-flip.php

If a value has several occurrences, the latest key will be used as its value, and all others will be lost.

This is (was?) somewhat faster than array_unique, but unless you are calling this a LOT, array_unique is a lot more descriptive, so probably the better option