php - Compare Two Arrays based on key value -


i'm working on quiz engine , comparing answers.

i have 2 arrays

correct answers :

 0 => "a"  1 => "a"  2 => "a"  3 => "c"

chosen answers...

 0 => "c"  1 => "b"  2 => "a"  3 => "b"

so based on this, know (from comparing myself) have 1 correct answer.

is there php function can compare keys , values , increment number of similar?

i've looked @ array_intersect , array_difference don't seem give me desired answer.

thanks

short solution using array_intersect_uassoc function (on extended input arrays):

$correct = ["a", "a", "a", "c", "a", "c"]; $chosen =  ["c", "b", "a", "b", "a", "b"];  $result = array_intersect_uassoc($correct, $chosen, 'strnatcmp'); print_r($result);

the output:

array (     [2] =>     [4] => )

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