Accessing array properties through magic getters and setters.

ArrayObject.php

<?php
namespace My;
use Doctrine\Common\Util\Inflector;

/**
 * Allow to access array properties using getters/setters
 * 
 * @method null set${Property}(mixed $value) set array property
 * @method mixed get${Property}() get array property
 * @author Bernard Baltrusaitis <bernard@runawaylover.info> 
 */
class ArrayObject extends \ArrayObject
{
    function __construct($array)
    { 
        parent::__construct($array, ArrayObject::ARRAY_AS_PROPS);
    }
    
    /**
     * Magic method catches getters and setters
     * 
     * @param string $name property name
     * @param array $arguments property value
     * @return mixed the value at the specified index or NULL. 
     * @throws \InvalidArgumentException 
     * @throws \BadMethodCallException 
     */
    public function __call($name, $arguments)
    {
        $matches = null;
        
        if (preg_match('/^get(\w+)/', $name, $matches)) {
            $property = Inflector::tableize($matches[1]);
            
            if (0 !== sizeof($arguments)) {
                throw new \InvalidArgumentException(
                    sprintf('The method `%s` does not expect arguments, %d given', 
                        $name, sizeof($arguments)));
            }
            
            return $this->offsetGet($property);
        }
        
        if (preg_match('/^set(\w+)/', $name, $matches)) {
            $property = Inflector::tableize($matches[1]);
            
            if (1 !== sizeof($arguments)) {
                throw new \InvalidArgumentException(
                    sprintf('The method `%s` expects exactly 1 argument, %d given', 
                        $name, sizeof($arguments)));
            }
            
            return $this->offsetSet($property, current($arguments));
        }
        
        throw new \BadMethodCallException(
            sprintf('Class `%s` does not have `%s` method', __CLASS__, $name));
    }
    
    /**
     * Get the string representation of the current array
     * 
     * @return string 
     */
    public function __toString()
    {
        return json_encode($this->getArrayCopy());
    }    
}