[PHP] Magic getters, setters for Object.

gistfile1.php

/**
 * Magic getters and setters.
 * Example:
 *   Properties:
 *    - name
 *    - created_at
 *
 *   Magic methods:
 *    - setName($name)
 *    - getName() 
 *    - hasName()
 *
 *    - setCreatedAt($created_at)
 *    - getCreatedAt() 
 *    - hasCreatedAt()
 **/

class MyObject { 
    public function __call($name, array $arguments) {
        $key = preg_replace_callback(
            '|[A-Z]|',
            create_function(
                '$matches',
                'return "_" . strtolower($matches[0]);'
            ),
            strtolower(substr($name, 3, 1)) . substr($name, 4)
        );
        
        $value = isset($arguments[0]) ? $arguments[0] : null;
        switch (substr($name, 0, 3)) {
            case 'get':
                if (property_exists($this, $key)) {
                    return $this->$key;
                }
                break;

            case 'set':
                if (property_exists($this, $key)) {
                    $this->$key = $value;
                    return $this;
                }
                break;

            case 'has':
                if (property_exists($this, $key)) {
                    return $this->$key !== null;
                }
                break;
        }

        throw new \Exception('Method "' . $name . '" does not exist and was not trapped in __call()');
    }
}