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<?php
declare(strict_types=1);
/**
* Wrapper for getting fields from the request (GET, POST, ...)
*/
class Request
{
/**
* Required and not empty
*/
const REQUIRED = "\0\1\2REQ\0\1\2";
/**
* Required, but might be empty
*/
const REQUIRED_EMPTY = "\0\3\4REQ\0\3\4";
/**
*
* @param string $key Key of field to get from $_GET
* @param string $default Value to return if $_GET does not contain $key
* @param string $type if the parameter exists, cast it to given type
* @return mixed Field from $_GET, or $default if not set
*/
public static function get(string $key, $default = false, $type = false)
{
return self::handle($_GET, $key, $default, $type);
}
/**
*
* @param string $key Key of field to get from $_POST
* @param string $default Value to return if $_POST does not contain $key
* @return mixed Field from $_POST, or $default if not set
*/
public static function post(string $key, $default = false, $type = false)
{
return self::handle($_POST, $key, $default, $type);
}
/**
*
* @param string $key Key of field to get from $_REQUEST
* @param string $default Value to return if $_REQUEST does not contain $key
* @return mixed Field from $_REQUEST, or $default if not set
*/
public static function any(string $key, $default = false, $type = false)
{
return self::handle($_REQUEST, $key, $default, $type);
}
/**
* @return true iff the request is a POST request
*/
public static function isPost(): bool
{
return $_SERVER['REQUEST_METHOD'] === 'POST';
}
/**
* @return true iff the request is a GET request
*/
public static function isGet(): bool
{
return $_SERVER['REQUEST_METHOD'] === 'GET';
}
private static function handle(&$array, $key, $default, $type)
{
if (!array_key_exists($key, $array)) {
if ($default === self::REQUIRED || $default === self::REQUIRED_EMPTY) {
Message::addError('main.parameter-missing', $key);
Util::redirect('?do=' . $_REQUEST['do']);
}
return $default;
}
if ($default === self::REQUIRED && $array[$key] === '') {
Message::addError('main.parameter-empty', $key);
Util::redirect('?do=' . $_REQUEST['do']);
}
if ($type !== false) settype($array[$key], $type);
return $array[$key];
}
}
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