Model.php

<?php namespace Devtools;

abstract class Model
{
    protected $connection;

    public abstract function get($key, $collection);
    public abstract function getAll($collection);
    public abstract function set($key, $value, $collection);
    public abstract function query($queryString);
    /* public abstract function connect($options); */

    protected function reduceResult($result)
    {
        if (is_array($result) && (count($result) == 1)) {
            reset($result);
            return $this->reduceResult($result[key($result)]);
        } else {
            return $result;
        }
    }

    public static function stringify($array, $force = false, $quotation="'")
    {
        $ret = "";
        if (!is_array($array)) {
            $array = array($array);
        }
        foreach ($array as $element) {
            if (!empty($ret)) {
                $ret .= ",";
            }
            $ret .= (!$force && is_numeric($element))
                ? $element
                : $quotation.$element.$quotation;
        }
        return $ret;
    }

    protected function stripWhitespace($dirty)
    {
        return preg_replace("/[ \\t\\n]+/u", " ", $dirty);
    }
}