trueskill/PHPSkills/HashMap.php

<?php

class HashMap
{
    private $_hashToValue = array();
    private $_hashToKey = array();

    public function getValue($key)
    {
        return $this->_hashToValue[self::getHash($key)];
    }

    public function setValue($key, $value)
    {
        $hash = self::getHash($key);
        $this->_hashToKey[$hash] = $key;
        $this->_hashToValue[$hash] = $value;
        return $this;
    }

    public function getAllKeys()
    {
        return \array_values($this->_hashToKey);
    }

    public function getAllValues()
    {
        return \array_values($this->_hashToValue);
    }

    public function count()
    {
        return \count($this->_hashToKey);
    }

    private static function getHash($key)
    {
        if(\is_object($key))
        {
            return \spl_object_hash($key);
        }

        return $key;
    }
}
?>