PHP：从2个数组中获取不匹配的记录

Below are the 2 arrays

$full = array('ABCD19ed81424931667', 'ABCD0c08b1424947569');   
$filtered = array('ABCD19ed81424931667');

I want the records which are not matching in 2 arrays. I have tried array_diff, array_diff_assoc functions it did not work for me.

array_diff returns the difference in 1 direction. To get the difference in both directions you can do 2 array_diff followed by a array_merge:

$output = array_merge(array_diff($full, $filtered), array_diff($filtered, $full));

array_diff — Computes the difference of arrays.

Here array_diff(A,B) and array_diff(B,A) is different.

$full = array('ABCD19ed81424931667', 'ABCD0c08b1424947569');   
$filtered = array('ABCD19ed81424931667');
$result = array_merge(array_diff($full, $filtered), array_diff($filtered, $full));

array_diff(A,B) returns all elements from A, which are not elements of B (= A without B). so you need to merge output