How to convert PHP 5.3 to PHP 5.2

Warp.php

<?php
/**
 * Instantiate the container.
 *
 * Objects and parameters can be passed as argument to the constructor.
 *
 * @param array $values The parameters or objects.
 */
public function __construct(array $values = array()) {
    $self = $this;
    $this->values = $values;

    // register helpers
    foreach ($this['config']->get('helper', array()) as $name => $class) {
        $this[$name] = $this->share(function($self) use ($class) { return new $class($self); });
    }
    
}


/**
 * Returns a closure that stores the result of the given closure for
 * uniqueness in the scope of this instance.
 *
 * @param Closure $callable A closure to wrap for uniqueness
 *
 * @return Closure The wrapped closure
 */
public static function share(Closure $callable) {
    return function ($c) use ($callable) {
        static $object;

        if (null === $object) {
            $object = $callable($c);
        }

        return $object;
    };
}