致命错误:无法声明类 ProductFilterIterator，因为该名称已在中使用中

Question

借助类 ProductFilterIterator 想要获取数据

class ProductFilterIterator extends FilterIterator
{
protected $filter;
protected $length;
public function __construct(Iterator $iterator,  $filter)
{
$this->filter = $filter;
$this->length = -strlen($filter);
parent::__construct($iterator);
}
public function accept() : bool
{
$current = $this->getInnerIterator()->current();
return substr($current['Товар'], $this->length) == $this->filter;
}
}

$iterator = (new ArrayObject($obj['items']))->getIterator();
$filter = new ProductFilterIterator($iterator, $arPart['ARTICLE']);
foreach ($filter as $obj) {
echo "<pre>";

我收到错误 - 致命错误：无法声明类产品过滤器迭代器，因为该名称已在

Answer 1

尝试使用命名空间，

namespace Custom;
class ProductFilterIterator extends FilterIterator
{
protected $filter;
protected $length;
public function __construct(Iterator $iterator,  $filter)
{
$this->filter = $filter;
$this->length = -strlen($filter);
parent::__construct($iterator);
}
public function accept() : bool
{
$current = $this->getInnerIterator()->current();
return substr($current['Товар'], $this->length) == $this->filter;
}
}

$iterator = (new ArrayObject($obj['items']))->getIterator();
$filter = new ProductFilterIterator($iterator, $arPart['ARTICLE']);
foreach ($filter as $obj) {
echo "<pre>";