class User { protected $mailingAddress; public function setMailingAddress($address) { $this->mailingAddress = $address; } } $user = new User(); $user->setMailingAddress('1234 Main St, Anytown USA');
class User { protected $mailingAddress; public function setMailingAddress($address) { $this->mailingAddress = $address; } public function getMailingAddress() { return $this->mailingAddress; } } $user = new User(); $user->setMailingAddress('1234 Main St, Anytown USA'); echo $user->getMailingAddress(); // output: 1234 Main St, Anytown USAPackage/library: It is likely that setMailingAddress method would be included in a larger package/library related to user management functions or e-commerce functionality. An example of such a library can be Symfony Security or Laravel Elixir.