3v4l.org

run code in 200+ php & hhvm versions
Bugs & Features
<?php class Email implements JsonSerializable { private $value; public function __construct(string $value) { $this->value = $value; } public function jsonSerialize() { return $this->value; } } $email = new Email('opexus@gmail.com'); echo json_encode(compact('email'));
based on LVLYd
Output for 7.0.0 - 7.2.0
{"email":"opexus@gmail.com"}
Output for 5.4.0 - 5.6.28
Catchable fatal error: Argument 1 passed to Email::__construct() must be an instance of string, string given, called in /in/FP90c on line 19 and defined in /in/FP90c on line 6
Process exited with code 255.