Online PHP editor | output for gZai2

@ 2022-06-30T14:28:35Z

<?php
class ResourceType
{
    public function __destruct() {
        echo "Resource is released.\n";
    }
}

function get_callback()
{
    $some_resource = new ResourceType();
    $fn = function() use($some_resource) {
        // // why is my lock released?
        var_dump($some_resource);
        // "Free that resource"
        $some_resource = null;
    };
    return $fn;
}

$fn = get_callback();
echo "Before callback\n";
$fn();
echo "After callback\n";

Output for 7.4.0 - 7.4.33, 8.0.1 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29, 8.3.0 - 8.3.27, 8.4.1 - 8.4.14, 8.5.0: Before callback object(ResourceType)#1 (0) { } After callback Resource is released.
Output for 8.4.15: /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libm.so.6: version `GLIBC_2.35' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.34' not found (required by /bin/php-8.4.15) /bin/php-8.4.15: /usr/lib/libc.so.6: version `GLIBC_2.38' not found (required by /bin/php-8.4.15)
Process exited with code 1.

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