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<?php interface Log { public function alert($message); } class EchoLog implements Log { public function alert($message) { echo $message; } } class TestLog { private $log; const ARR = ['Hello', ' ', 'World!']; public function __construct(Log $log) { $this->log = $log; } public function run() { $this->log->alert(SELF::ARR[0] . SELF::ARR[1] . SELF::ARR[2]); } } $testLog = new TestLog(new EchoLog()); $testLog->run();
Output for git.master, git.master_jit, rfc.property-hooks
Hello World!

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