Question

In an array select element randomly, but which is not selected by user

For example : array('02', '11', '20') , if user selects one element ('02') then we want to select an element randomly either '11' or '20'. i.e user select '02' will get '11' on one time and '20' on other time.

It is a long array ,so IF/ELSE etc are not pratically possible.

Answer 1

function unique_rand($array, $value) {
    unset($array[array_search($value,$array)]); // delete user-selected item
    return $array[array_rand($array, 1)];
}