<?php
$a = ['a' => 'Apple', 'b' => 'Banana'];
$b = ['a' => 'Apple', 'b' => 'Banana'];

var_dump($a === $b);

$a = ['a' => 'Apple', 'b' => 'Banana'];
$b = ['b' => 'Banana', 'a' => 'Apple'];

var_dump($a === $b); // returns false because order is inequal