Sort Alphabet letters array in ascending order

Question

I have an PHP Indexed array having only alphabet letters randomly i want to sort this array in ascending order and also want to avoid duplication. e.g.

$letters = array("b","d","g","h","v","a","c","a");

I want like this

$letters = array("a","b","c","d","g","h","v");

How I can perform this scenario specially ?

Answer 1

Use sort() to sort it, and array_unique() to remove the duplicate values.

sort($letters);
$letters = array_unique($letters);

Answer 2

You can use sort function. Sort function accept parameter as array and sort it ascending order. Try the below code

$letters = array("b","d","g","h","v","a","c","a");
$letters = array_unique($letters);
sort($letters);
print_r($letters);