PHP check if 2 arrays have same value code example

Example 1: php check if any of multiple values in array

function in_array_any($needles, $haystack) {
   return !empty(array_intersect($needles, $haystack));
}

echo in_array_any( [3,9], [5,8,3,1,2] ); // true, since 3 is present
echo in_array_any( [4,9], [5,8,3,1,2] ); // false, neither 4 nor 9 is present

Example 2: check if any values are the same in an array php

if(count(array_unique($array, SORT_REGULAR)) < count($array)) {
    // $array has duplicates
} else {
    // $array does not have duplicates
}