- var_dump: documentation ( source)
- array_shift: documentation ( source)
- array_pop: documentation ( source)
<?php
namespace Test;
class SegmentCollection
{
private $segmentArray = [];
public function __construct(array $segmentArray)
{
$this->segmentArray = $segmentArray;
}
public function popSegment()
{
return array_pop($this->segmentArray);
}
public function shiftSegment()
{
return array_shift($this->segmentArray);
}
}
interface SegmentReader
{
public function getNextSegment();
}
abstract class SegmentReaderBase implements SegmentReader
{
protected $segmentCollection;
public function __construct(SegmentCollection $segmentCollection)
{
$this->segmentCollection = $segmentCollection;
}
}
class PopSegmentReader extends SegmentReaderBase
{
public function getNextSegment()
{
return $this->segmentCollection->popSegment();
}
}
class ShiftSegmentReader extends SegmentReaderBase
{
public function getNextSegment()
{
return $this->segmentCollection->shiftSegment();
}
}
function acceptSegmentReader(SegmentReader $segmentReader)
{
var_dump($segmentReader->getNextSegment());
var_dump($segmentReader->getNextSegment());
}
$segmentCollection = new SegmentCollection(['foo', 'bar', 'qux', 'zip']);
acceptSegmentReader(new PopSegmentReader($segmentCollection));
acceptSegmentReader(new ShiftSegmentReader($segmentCollection));