Description:
------------
The function array_intersect_assoc compares keys AND values. According to the documentation only the keys should be considered.

The documentation says:
"Note that the keys are used in the comparison unlike in array_intersect()."

If this is the volitional behavior you should point that out in the documentation ("... that the keys are used too ...").

Reproduce code:
---------------
$array1 = array ("a" => "green");
$array2 = array ("a" => "greenToo");
print_r(array_intersect_assoc ($array1, $array2));

Expected result:
----------------
Array(
  [a] => "green"
)

Actual result:
--------------
Array()