ConfigModel.php

<?php
class ConfigForm extends CFormModel
{
    private $_config = array();

    /**
     * @param array $config 
   * @param string $scenario 
     */
    public function __construct($config = array(), $scenario = '')
    {
        parent::__construct($scenario);
        $this->setConfig($config);
    }

    public function setConfig($config)
    {
        $this->_config = $config;
    }

    public function getConfig()
    {
        return $this->_config;
    }

    public function __get($name)
    {
        if (isset($this->_config[$name]))
            return $this->_config[$name];
        else
            return parent::__get($name);
    }

    public function __set($name, $value)
    {
        if (isset($this->_config[$name]))
            $this->_config[$name] = $value;
        else
            parent::__set($name, $value);
    }

    public function save($path)
    {
        $config = $this->generateConfigFile();
        if(!is_writable($path))
            throw new CException("Cannot write to config file!");
        file_put_contents($path, $config, FILE_TEXT);
        return true;
    }

    public function generateConfigFile()
    {
        $this->generateConfigFileRecursive($this->_config, $output);
        $output = preg_replace('#,$\n#s', '', $output);
        return "<?php\nreturn CMap::mergeArray(require(dirname(__FILE__).'/main.php'), " . $output . ");\n";
    }

    public function generateConfigFileRecursive($attributes, &$output = "", $depth = 1)
    {
        $output .= "array(\n";
        foreach ($attributes as $attribute => $value) {
            if (!is_array($value))
                $output .= str_repeat("\t", $depth) . "'" . $this->escape($attribute) . "' => '" . $this->escape($value) . "',\n";
            else {
                $output .= str_repeat("\t", $depth) . "'" . $this->escape($attribute) . "' => ";
                $this->generateConfigFileRecursive($value, $output, $depth + 1);
            }
        }
        $output .= str_repeat("\t", $depth - 1) . "),\n";
    }

    private function escape($value)
    {
        return str_replace("'", "\'", $value);
    }

    /**
     * 
     * @return array
     */
    public function getAttributes($names=array())
    {
        $this->attributesRecursive($this->_config, $output);
        return $output;
    }

    /**
     * 
     *
     * @return array
     */
    public function attributeNames()
    {
        $this->attributesRecursive($this->_config, $output);
        return array_keys($output);
    }

    /**
     * 
     * @param array $config
     * @param array $output
     * @param string $name
     */
    public function attributesRecursive($config = array(), &$output = array(), $name = '')
    {
        foreach ($config as $key => $attribute) {
            if ($name == '')
                $paramName = $key;
            else
                $paramName = $name . "[{$key}]";
            if (is_array($attribute))
                $this->attributesRecursive($attribute, $output, $paramName);
            else
                $output[$paramName] = $attribute;
        }
    }

    public function attributeLabels()
    {
        return array(
            'name' => 'Site name',
            'params[adminEmail]' => 'Admin email',
            'params[phoneNumber]' => 'Phone number',
            'params[motto]' => 'Site description',
        );
    }

    public function rules()
    {
        $rules = array();
        $attributes = array_keys($this->_config);
        $rules[] = array(implode(', ', $attributes), 'safe');
        return $rules;
    }

}