php interface ArrayProcessor public function getValueFromArray Array a

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<?php
interface ArrayProcessor
{
public function getValueFromArray(Array $array);
}
interface Integerable
{
public function getIntegerScalar();
}
interface IntegerProcessor
{
public function getValueFromInteger(Integerable $integer);
}
interface IntegerableArrayProcessor extends ArrayProcessor, Integerable
{
}
interface Floatable extends Integerable
{
public function getFloatScalar();
}
abstract class AbstractFloatable implements Floatable
{
public function getIntegerScalar()
{
return (int) $this->getFloatScalar();
}
}
interface Filter
{
public function apply(Request $request, Response $response);
}
class FilterChain implements Filter
{
private $filters = Null;
public function __construct()
{
$this->resetFilters();
}
protected function resetFilters()
{
$this->filters = new ArrayObject();
return $this;
}
public function attach(Filter $filter)
{
$this->filters->append($filter);
}
public function apply(Request $request, Response $response)
{
foreach ($this->fitlers as $filter)
{
$filter->apply($request, $response)
}
return $this;
}
}