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<?php class Field { const READ = 1; const WRITE = 2; private $name; private $readWriteMask; public function __construct($name, $readWriteMask = null) { $this->name = (string) $name; $this->readWriteMask = $readWriteMask ?: self::READ; } public function getName() { return $this->name; } public function isReadable() { return (bool) $this->readWriteMask & self::READ; } public function isWritable() { return (bool) $this->readWriteMask & self::WRITE; } } $a = new Field('a'); var_dump($a); var_dump($a->isReadable()); var_dump($a->isWritable()); $b = new Field('b', Field::WRITE); var_dump($b); var_dump($b->isReadable()); var_dump($b->isWritable());

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38.94 ms | 402 KiB | 5 Q