professional-php-01-class.Door.php / php
<?php require_once('interface.Openable.php'); class Door implements Openable { private this->_locked) { print "Can't open the door. It's locked."; } else { print "creak...<br>"; } } public function close() { print "Slam!!<br>"; } public function lockDoor() { this->_locked = false; } } ?>
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