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<?php
/**
* Iterator for arrays requiring filtered values
*
* @package Requests\Utilities
*/
namespace WpOrg\Requests\Utility;
use ArrayIterator;
use ReturnTypeWillChange;
use WpOrg\Requests\Exception\InvalidArgument;
use WpOrg\Requests\Utility\InputValidator;
/**
* Iterator for arrays requiring filtered values
*
* @package Requests\Utilities
*/
final class FilteredIterator extends ArrayIterator {
/**
* Callback to run as a filter
*
* @var callable
*/
private $callback;
/**
* Create a new iterator
*
* @param array $data The array or object to be iterated on.
* @param callable $callback Callback to be called on each value
*
* @throws \WpOrg\Requests\Exception\InvalidArgument When the passed $data argument is not iterable.
*/
public function __construct($data, $callback) {
if (InputValidator::is_iterable($data) === false) {
throw InvalidArgument::create(1, '$data', 'iterable', gettype($data));
}
parent::__construct($data);
if (is_callable($callback)) {
$this->callback = $callback;
}
}
/**
* Prevent unserialization of the object for security reasons.
*
* @phpcs:disable PHPCompatibility.FunctionNameRestrictions.NewMagicMethods.__unserializeFound
*
* @param array $data Restored array of data originally serialized.
*
* @return void
*/
#[ReturnTypeWillChange]
public function __unserialize($data) {}
// phpcs:enable
/**
* Perform reinitialization tasks.
*
* Prevents a callback from being injected during unserialization of an object.
*
* @return void
*/
public function __wakeup() {
unset($this->callback);
}
/**
* Get the current item's value after filtering
*
* @return string
*/
#[ReturnTypeWillChange]
public function current() {
$value = parent::current();
if (is_callable($this->callback)) {
$value = call_user_func($this->callback, $value);
}
return $value;
}
/**
* Prevent creating a PHP value from a stored representation of the object for security reasons.
*
* @param string $data The serialized string.
*
* @return void
*/
#[ReturnTypeWillChange]
public function unserialize($data) {}
}