f.php

<?php

/**
 * Implementation of FooInterface.
 */
class FooClass implements FooInterface
{
    /**
     * @var array
     */
    private $bars = array();
    
    /**
     * Constructor.
     * 
     * @param array         $bars
     * @param SomeInterface $some
     */
    public function __construct(array $bars, SomeInterface $some)
    { /* ... */ }
}