3v4l.org

run code in 300+ PHP versions simultaneously
<?php class Foo implements \Serializable { public function serialize(): string { return ''; } public function unserialize(string $serialized): void { } }
Output for git.master, git.master_jit, rfc.property-hooks
Deprecated: Foo implements the Serializable interface, which is deprecated. Implement __serialize() and __unserialize() instead (or in addition, if support for old PHP versions is necessary) in /in/b3HaW on line 3

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