how to check two array values are equal in php code example

Example 1: check if all values in array are equal php

if(count(array_unique($array)) === 1) {
    // all values in $array are the same
} else {
    // at least 1 value in $array is different
}

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
}