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<?php interface Logger { public function log($message); } class Application { protected $logger; public function setLogger(Logger $logger) { $this->logger = $logger; } public function doTask() { $this->logger->log('test data'); } } $app = new Application(); $app->setLogger(new class implements Logger { public function log($message) { var_dump($message); } }); $app->doTask();
Output for git.master, git.master_jit, rfc.property-hooks
string(9) "test data"

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