(unset) Was Removed

(unset) operator is removed. Use the unset() function for that feature.

PHP code

<?php

$a = 1;
(unset) $a;

var_dump($a);

?>

Before

PHP Deprecated:  The (unset) cast is deprecated

Deprecated: The (unset) cast is deprecated
int(1)

After

PHP Fatal error:  The (unset) cast is no longer supported

Fatal error: The (unset) cast is no longer supported

PHP version change

This behavior was deprecated in 7.4

This behavior changed in 8.0

Error Messages

Analyzer