array unique php by key code example

Example 1: remove duplicate value from array

let chars = ['A', 'B', 'A', 'C', 'B'];
let uniqueChars = [...new Set(chars)];

console.log(uniqueChars);

Example 2: unique key value array php

$input = array_map("unserialize", array_unique(array_map("serialize", $input)));