Find differences in two arrays and put differences in an a new array or variables

Question

I have two arrays

 Array ( [0] => db [1] => es [2] => fs [3] => rp [4] => ti [5] => wb )////array $a
 Array ( [0] => es [1] => db [2] => fs ) ///array $b

I need to compare array $b to $a and put the ones that are missing in $b in a new array $c

 $c=array();

Answer 1

Use array_diff()

$c = array_diff($array1, $array2);