by using
print_r($_POST);
i am getting data something like this
Array ( [selected_friends] => {"0":"699712136","1":"1622040878","2":"100002980112267"})
how i can use it as array and put it into a array variable like
$a[0] = 699712136;
$a[1] = 1622040878;
and so on.
You could do
$a = json_decode($_POST['selected_friends'], true);
It looks like JSON. Try json_decode()