Online PHP editor | output for HhPZP

@ 2020-04-14T14:14:11Z

<?php declare(strict_types=1);

class Foo
{
    private array $data = [];
    
    public function __set(string $name, $value): void
    {
        $this->data[$name] = $value;
    }
    
    public function __isset(string $name): bool
    {
        return isset($this->data[$name]);
    }

    public function __unset(string $name): void
    {
        unset($this->data[$name]);
    }
}

$foo = new Foo();

$one = 1;
$two = 2;

$foo->$one = 'one';
$foo->$two = 'two';

var_dump(
    isset($foo->$one), // true
    isset($foo->$two) // true
);  

unset($foo->$one);

var_dump(
    isset($foo->$one) // false
);

Output for 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.4, 8.3.6: bool(true) bool(true) bool(false)
Output for 8.3.5: Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0 bool(true) bool(true) bool(false)
Output for 7.2.0 - 7.2.33, 7.3.0 - 7.3.33: Parse error: syntax error, unexpected 'array' (T_ARRAY), expecting function (T_FUNCTION) or const (T_CONST) in /in/HhPZP on line 5
Process exited with code 255.

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