Test Quest OOP (php version > 5.3)

ArrayHelperInterface.php

interface ArrayHelperInterface extends IteratorAggregate,
    Traversable,
    ArrayAccess,
    Serializable,
    Countable {

    /**
     * @param ArrayHelperInterface|ArrayObject|array $array
     */
    function __construct($array);

    /**
     * Creates a new array with the results of calling a provided function on every element in the ArrayHelperInterface.
     * @param $callback
     * @return ArrayHelperInterface
     */
    public function map($callback);

    /**
     * Calls a function for each element in the ArrayHelperInterface.
     * @param $callback
     * @return void
     */
    public function each($callback);

    /**
     * Returns true if at least one element in the array satisfies the provided testing function.
     * @dev must finish iteration after first matching
     * @param Closure|string $callback
     * @return boolean
     */
    public function some($callback);

    /**
     * Returns true if every element in the array satisfies the provided testing function.
     * @param Closure|string $callback
     * @return boolean
     */
    public function every($callback);

    /**
     * 
     * @param object|mixed $value
     * @return mixed
     */
    public function indexOf($value);
}