--TEST--

Object Serializable interface can be serialized in references

--INI--

; Note that php 8.1 deprecates using Serializable without __serialize/__unserialize but we are testing Serialize for igbinary. Suppress deprecations.

error_reporting=E_ALL & ~E_DEPRECATED

--FILE--

<?php

if(!extension_loaded('igbinary')) {

dl('igbinary.' . PHP_SHLIB_SUFFIX);

}

function test($variable) {

$serialized = igbinary_serialize($variable);

$unserialized = igbinary_unserialize($serialized);

}

class Obj implements Serializable {

private static $count = 1;

public $a;

public $b;

function __construct($a, $b) {

$this->a = $a;

$this->b = $b;

}

public function serialize() {

$c = self::$count++;

echo "call serialize\n";

return pack('NN', $this->a, $this->b);

}

public function unserialize($serialized) {

$tmp = unpack('N*', $serialized);

$this->__construct($tmp[1], $tmp[2]);

$c = self::$count++;

echo "call unserialize\n";

}

}

function main() {

$a = new Obj(1, 0);

$b = new Obj(42, 43);

$variable = array(&$a, &$a, $b);

$serialized = igbinary_serialize($variable);

printf("%s\n", bin2hex($serialized));

$unserialized = igbinary_unserialize($serialized);

var_dump($unserialized);

$unserialized[0] = 'A';

var_dump($unserialized[1]);

}

main();

--EXPECTF--

call serialize

call serialize

00000002140306002517034f626a1d080000000100000000060125220106021a001d080000002a0000002b

call unserialize

call unserialize

array(3) {

[0]=>

&object(Obj)#%d (2) {

["a"]=>

int(1)

["b"]=>

int(0)

}

[1]=>

&object(Obj)#%d (2) {

["a"]=>

int(1)

["b"]=>

int(0)

}

[2]=>

object(Obj)#%d (2) {

["a"]=>

int(42)

["b"]=>

int(43)

}

}

string(1) "A"