php combine 2 single dimensional arrays based on shared values

How to merge these two arrays:

$arr1 = array ( 1, 3, 2 );
$arr2 = array ( 1, 2, 4 );

So the result is an array with only the values found in both:

$result = array ( 1, 2 );

>Solution :

Use the array_intersect() function that "returns an array containing all the values of array that are present in all the arguments. Note that keys are preserved."

<?php

$arr1 =  [ 1, 3, 2 ];
$arr2 = [ 1, 2, 4 ];

$result = array_intersect($arr1, $arr2);

?>

Output:

Array ( [0] => 1 [2] => 2 )

You can use the array_values() to "return all the values from the array and index the array numerically."

$result = array_values(array_intersect($arr1, $arr2));

Output:

Array ( [0] => 1 [1] => 2 )