<?php
/*
* Queasy PHP Framework - Configuration
*
* (c) Vitaly Demyanenko <vitaly_demyanenko@yahoo.com>
*
* For the full copyright and license information, please view the LICENSE file that was distributed with this source code.
*/
namespace queasy\config;
/**
* Configuration interface
*/
interface ConfigInterface extends \Iterator, \ArrayAccess, \Countable
{
/**
* Get an option value from configuration by name provided, or return $default, or null if $default not set.
*
* @param string $name Config option name
* @param mixed|null $default Value to be returned if option $name is missing
*
* @return mixed Option value
*/
function get($name, $default = null);
/**
* Get an option value from configuration by name provided.
*
* @param string $name Config option name
*
* @return mixed Option value or $default if $name option is missing
*
* @throws ConfigException When $name option is missing
*/
function need($name);
/**
* Get an option value from configuration by option name provided like a object property.
*
* @param string $name Option name
*
* @return mixed|null Option value or null if option is missing
*/
function __get($name);
/**
* Set an option value.
*
* @param string $name Option name
* @param mixed $value Option value
*/
function __set($name, $value);
/**
* Check if an option exists in config.
*
* @param string $name Option name
*
* @return bool True if an option exists, false otherwise
*/
function __isset($name);
/**
* Unset option in config.
*
* @param string $name Option name
*/
function __unset($name);
/**
* Call class instance as a get() function.
*
* @param string $name Option name
* @param string $default Default option value (optional)
*
* @return mixed Option value or $default if $name option is missing
*/
function __invoke($name, $default = null);
/**
* Search for config keys using regular expression.
*
* @param string $regex Regular expression
*
* @return ConfigInterface Config instance containing key/option pairs found.
*/
public function regex($regex);
/**
* Search for config keys using regular expression.
*
* @param array|ArrayAccess|Iterator $array Array to merge with
*/
public function merge($array);
/**
* Convert all configuration structure into a regular array.
*
* @return array Configuration represented as a regular array
*/
function toArray();
}
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