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<?php class x implements splobserver { public function update(splsubject $subject, $foo, $bar) {} }
Output for git.master, git.master_jit, rfc.property-hooks
Fatal error: Declaration of x::update(splsubject $subject, $foo, $bar) must be compatible with SplObserver::update(SplSubject $subject): void in /in/8cUXG on line 4
Process exited with code 255.

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