3v4l.org

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<?php namespace MagicSerialization; class Ok { /** @return array<mixed> */ public function __serialize(): array { return []; } /** @param array<mixed> $data */ public function __unserialize(array $data): void { } } class WrongSignature { public function __serialize(): string { return ''; } public function __unserialize(string $data): string { return ''; } }
Output for git.master, git.master_jit
Fatal error: MagicSerialization\WrongSignature::__serialize(): Return type must be array when declared in /in/bLjLG on line 21
Process exited with code 255.

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