<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\HttpFoundation;
use Symfony\Component\HttpFoundation\Exception\BadRequestException;
/**
* ParameterBag is a container for key/value pairs.
*
* @author Fabien Potencier <fabien@symfony.com>
*
* @implements \IteratorAggregate<string, mixed>
*/
class ParameterBag implements \IteratorAggregate, \Countable
{
/**
* Parameter storage.
*/
protected $parameters;
public function __construct(array $parameters = [])
{
$this->parameters = $parameters;
}
/**
* Returns the parameters.
*
* @param string|null $key The name of the parameter to return or null to get them all
*/
public function all(string $key = null): array
{
if (null === $key) {
return $this->parameters;
}
if (!\is_array($value = $this->parameters[$key] ?? [])) {
throw new BadRequestException(sprintf('Unexpected value for parameter "%s": expecting "array", got "%s".', $key, get_debug_type($value)));
}
return $value;
}
/**
* Returns the parameter keys.
*/
public function keys(): array
{
return array_keys($this->parameters);
}
/**
* Replaces the current parameters by a new set.
*/
public function replace(array $parameters = [])
{
$this->parameters = $parameters;
}
/**
* Adds parameters.
*/
public function add(array $parameters = [])
{
$this->parameters = array_replace($this->parameters, $parameters);
}
public function get(string $key, mixed $default = null): mixed
{
return \array_key_exists($key, $this->parameters) ? $this->parameters[$key] : $default;
}
public function set(string $key, mixed $value)
{
$this->parameters[$key] = $value;
}
/**
* Returns true if the parameter is defined.
*/
public function has(string $key): bool
{
return \array_key_exists($key, $this->parameters);
}
/**
* Removes a parameter.
*/
public function remove(string $key)
{
unset($this->parameters[$key]);
}
/**
* Returns the alphabetic characters of the parameter value.
*/
public function getAlpha(string $key, string $default = ''): string
{
return preg_replace('/[^[:alpha:]]/', '', $this->get($key, $default));
}
/**
* Returns the alphabetic characters and digits of the parameter value.
*/
public function getAlnum(string $key, string $default = ''): string
{
return preg_replace('/[^[:alnum:]]/', '', $this->get($key, $default));
}
/**
* Returns the digits of the parameter value.
*/
public function getDigits(string $key, string $default = ''): string
{
// we need to remove - and + because they're allowed in the filter
return str_replace(['-', '+'], '', $this->filter($key, $default, \FILTER_SANITIZE_NUMBER_INT));
}
/**
* Returns the parameter value converted to integer.
*/
public function getInt(string $key, int $default = 0): int
{
return (int) $this->get($key, $default);
}
/**
* Returns the parameter value converted to boolean.
*/
public function getBoolean(string $key, bool $default = false): bool
{
return $this->filter($key, $default, \FILTER_VALIDATE_BOOLEAN);
}
/**
* Filter key.
*
* @param int $filter FILTER_* constant
*
* @see https://php.net/filter-var
*/
public function filter(string $key, mixed $default = null, int $filter = \FILTER_DEFAULT, mixed $options = []): mixed
{
$value = $this->get($key, $default);
// Always turn $options into an array - this allows filter_var option shortcuts.
if (!\is_array($options) && $options) {
$options = ['flags' => $options];
}
// Add a convenience check for arrays.
if (\is_array($value) && !isset($options['flags'])) {
$options['flags'] = \FILTER_REQUIRE_ARRAY;
}
if ((\FILTER_CALLBACK & $filter) && !(($options['options'] ?? null) instanceof \Closure)) {
throw new \InvalidArgumentException(sprintf('A Closure must be passed to "%s()" when FILTER_CALLBACK is used, "%s" given.', __METHOD__, get_debug_type($options['options'] ?? null)));
}
return filter_var($value, $filter, $options);
}
/**
* Returns an iterator for parameters.
*
* @return \ArrayIterator<string, mixed>
*/
public function getIterator(): \ArrayIterator
{
return new \ArrayIterator($this->parameters);
}
/**
* Returns the number of parameters.
*/
public function count(): int
{
return \count($this->parameters);
}
}
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