Online PHP editor | output for 9hVS2

@ 2017-01-07T19:19:13Z

<?php
error_reporting(E_ERROR | E_WARNING | E_PARSE);
class Definition implements Serializable {
	private $value;
	public function __construct($value) {
		$this->value = $value;
	}
	public function serialize() {
	    echo serialize([$this->value])."\n";
		return serialize($this->value);
	}
	public function unserialize($data) {
		$this->value = unserialize($data);
	}
}

$a=new stdClass();
$d=new Definition($a);
var_dump(unserialize(serialize([$d,'This text will appear twice!',$a])));

Output for 8.3.0 - 8.3.26, 8.4.1 - 8.4.13: a:1:{i:0;O:8:"stdClass":0:{}} Warning: unserialize(): Error at offset 4 of 4 bytes in /in/9hVS2 on line 13 Warning: unserialize(): Error at offset 83 of 84 bytes in /in/9hVS2 on line 19 bool(false)
Output for 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.33, 8.2.0 - 8.2.29: a:1:{i:0;O:8:"stdClass":0:{}} bool(false)
Output for 5.6.0 - 5.6.40, 7.0.0 - 7.0.33, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33: a:1:{i:0;O:8:"stdClass":0:{}} array(3) { [0]=> object(Definition)#3 (1) { ["value":"Definition":private]=> bool(false) } [1]=> string(28) "This text will appear twice!" [2]=> string(28) "This text will appear twice!" }

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