Delete property from object php (ok)

https://www.codegrepper.com/code-examples/php/delete+property+from+object+php

Ví dụ 1:

<?php
$var     = (object) ['a' => 1];
unset($var->a);
echo $var->a;
?>

Ví dụ 2:

<?php
$var     = (object) ['a' => 1];
// unset($var->a);
echo $var->a;
?>