composer require brezgalov/php-typed-collection dev-master
Abstraction designed to make typed collections based on Iterator interface
If you need more functions - feel fre to add them to your custom implementation. You can implement ArrayAccess when it required
class MyClassCollection extends AbstractTypedIterator
{
/**
* override to set collection element type
*/
public function current(): MyClass
{
return parent::current();
}
/**
* Make shure items are same type
*/
protected function validateItem($item): bool
{
return $item instanceof MyClass;
}
}
// now go use
$collection = new MyClassCollection([
new MyClass(),
new MyClass(),
new MyClass(),
]);
foreach($collection as $class) {
// $class instance of MyClass - put your handle logic here
}
Objects stored inside collection are references.
If you want to clone collection safely - consider using ContainerDeepCloneTrait or AbstractTypedCloneSafeIterator as it shown below:
ContainerDeepCloneTrait:
class MyClassCollection extends AbstractTypedIterator
{
use ContainerDeepCloneTrait;
public function current(): MyClass
{
return parent::current();
}
protected function validateItem($item): bool
{
return $item instanceof MyClass;
}
}
$clone = clone $myClassCollection; // it's deep cloned now
AbstractTypedCloneSafeIterator:
class MyClassCollection extends AbstractTypedCloneSafeIterator
{
...
}
function testClone() {
$myClass = new MyClass();
$array = [$myClass];
return new MyClassCollection($array); // $myClass is cloned
}