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run code in 300+ PHP versions simultaneously

@ 2023-11-15T04:18:47Z

<?php

class F {
    private string $bar;
    public function __construct(private string $foo, string $bar){
        $this->bar = $bar;
    }
    
    public function __sleep(): array {
        return array_keys(get_object_vars($this));
    }
    public function getFoo():string {
        return $this->foo;
    }
    public function getBar():string {
        return $this->bar;
    }
}
$g = new F('this is a private variable', 'so is this');

class G extends F {}

$s = serialize($g);
var_export($s);
$n = unserialize($s);
echo \PHP_EOL;
echo $n->getFoo();
echo \PHP_EOL;
echo $n->getBar();

$h = new G('This is an extension', 'of the other one');
$s = serialize($h);
echo \PHP_EOL;
var_export($s);
$n = unserialize($s);
echo \PHP_EOL;
echo $n->getFoo();
echo \PHP_EOL;
echo $n->getBar();

Output for 8.0.1 - 8.0.30, 8.1.0 - 8.1.31, 8.2.0 - 8.2.26, 8.3.0 - 8.3.15, 8.4.1 - 8.4.2: 'O:1:"F":2:{s:6:"' . "\0" . 'F' . "\0" . 'bar";s:10:"so is this";s:6:"' . "\0" . 'F' . "\0" . 'foo";s:26:"this is a private variable";}' this is a private variable so is this Warning: serialize(): "bar" returned as member variable from __sleep() but does not exist in /in/d6WN9 on line 32 Warning: serialize(): "foo" returned as member variable from __sleep() but does not exist in /in/d6WN9 on line 32 'O:1:"G":0:{}' Fatal error: Uncaught Error: Typed property F::$foo must not be accessed before initialization in /in/d6WN9:13 Stack trace: #0 /in/d6WN9(37): F->getFoo() #1 {main} thrown in /in/d6WN9 on line 13
Process exited with code 255.

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