How to remove an array element?

Question

PHP

Hey!

Tell me what I missed in this life, that the below code does not work:

<?php
$arr = [];
$arr[] = 'AAA';
$arr[] = 'BBB';
$arr[] = 'CCC';

unset($arr['BBB']);

print_r($arr); // AAA, BBB, CCC

Answer 1

why should he work if your array does not have an element with the key BBB .

Answer 2

$arr = ['AAA','BBB','CCC'];
unset($arr['BBB']);
print_r($arr) //AAA,CCC