In a question form, there is a checkbox for the options of the question. I use the checkboxes as the question has more than one correct answer. When POSTing this form information. (via JSON)
Sample:
{"session":"xxxx","selectedBoxes":["3","1"]}
On the server-side, I want to compare the incoming POST data with the data in the database.
On the server-side the correct answer to the question is stored as:
Sample:
{"0":"1","1":"3"}
The meaning of this data; The first and third options of question are correct.
In a small test environment, I tried:
$array1 = json_decode('{"0":"1","1":"3"}', true);
$array2 = array(3,1);
function array_equal_values(array $a, array $b)
{
return !array_diff($a, $b) && !array_diff($b, $a);
}
if (array_equal_values($array1, $array2) == true) {
return true;
} else {
return false;
}
Is this comparison a correct solution?
array_diff()twice you could first assert thatcount($a) == count($b)and then just usearray_diff()once. That makes it slightly easier to understand.