PHP array comparison

Question

How to compare 2 arrays with each other?
For example i have array("a", "b", "c") and array("a", "c", "b") It would return true when they're compared. But if one of the letters if not found in one of them it would return false. Order is not important.

Answer 1

Well it doesnt return true, but it does the job - array_diff

Answer 2

You need to bring the content of both arrays into the same order prior to comparison:

sort($array1);
sort($array2);
// now you can compare as usual
if ($array1 == $array2) ...

Or use asort() if you want to maintain keys.

Answer 3

array_diff

$diff = array_diff($array1, $array2);
if(!count($diff)){
  # is the same
}

Answer 4

You can use:

if (empty(array_diff($array1, $array2)) {
    // do something
}