Compare to values of two arrays in PHP

Question

Hi i want to compare all the values of 2 arrays and end up with a true or false . I am using the code below and would of thought that the result would be false . but that is

Answer 1

It might sound silly, but comparing two array of different lengths will NOT yield expected difference. Check the length of the arrays first and if they match then use array_diff. Otherwise your diff will always be empty.