How to compare two arrays and remove matching elements from one for the next loop?

Question

How else might you compare two arrays ($A and $B )and reduce matching elements out of the first to prep for the next loop over the array $A?

$A = array(1,2,3         


        

Answer 1

Try to this

$a = array(0=>'a',1=>'x',2=>'c',3=>'y',4=>'w');
$b = array(1=>'a',6=>'b',2=>'y',3=>'z');
$c = array_intersect($a, $b);

$result = array_diff($a, $c);
print_r($result);