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<?php interface DataTransferObject { public static function fromParams(array $params); public function asArray(); } trait DataTransferTrait { private static $mutable; private function __construct(array $params) { foreach ($params as $key => $value) { $this->{'set' . str_replace(' ', '', ucwords(str_replace('_', ' ', $key)))}($value); } unset($mutable); } public static function fromParams(array $params) { return new static($params); } public function asArray() { return get_object_vars($this); } public function __call($method, $args) { if (isset(self::$mutable) && substr($method, 0, 3) == 'set' && property_exists($this, lcfirst(substr($method, 3)))) { $this->{lcfirst(substr($method, 3))} = reset($args); } } } abstract class Command { } final class MyCommand extends Command implements DataTransferObject { use DataTransferTrait; private $foo; private $bar; private function setBar($value) { $this->bar = $value; } } $foo = MyCommand::fromParams(array('foo' => 'foo', 'bar' => 'bar', 'meh' => 'meh')); $foo->setFoo('newfoo'); $foo->setDog('dog'); var_dump($foo);
Output for git.master, git.master_jit, rfc.property-hooks
object(MyCommand)#1 (2) { ["foo":"MyCommand":private]=> NULL ["bar":"MyCommand":private]=> string(3) "bar" }

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