<?php
interface Creatable
{
}
class FooCreatable implements Creatable
{
}
class BarCreatable implements Creatable
{
}
interface Creator
{
/**
*
* @param string $input
* @param Creatable $creatable
* @return bool
*/
function tryCreate($input, Creatable &$creatable = null);
}
class AggregateCreator implements Creator
{
/**
*
* @var Creator[]
*/
private $creators = [];
/**
*
* @param Creator[] $creators
*/
public function __construct($creators)
{
$this->creators = $creators;
}
/**
*
* @param string $input
* @param Creatable $creatable
* @return bool
*/
public function tryCreate($input, Creatable &$creatable = null)
{
foreach ($this->creators as $creator)
{
if ($creator->tryCreate($input, $creatable))
{
return true;
}
}
return false;
}
}
class FooCreator implements Creator
{
/**
*
* @param string $input
* @param Creatable $creatable
* @return bool
*/
public function tryCreate($input, Creatable &$creatable = null)
{
if ($input == 'foo')
{
$creatable = new FooCreatable;
return true;
}
return false;
}
}
class BarCreator implements Creator
{
/**
*
* @param string $input
* @param Creatable $creatable
* @return bool
*/
public function tryCreate($input, Creatable &$creatable = null)
{
if ($input == 'bar')
{
$creatable = new BarCreatable;
return true;
}
return false;
}
}
$creator = new AggregateCreator([
new FooCreator,
new BarCreator,
]);
$creatable = null;
var_dump($creator->tryCreate('foo', $creatable), $creatable);
$creatable = null;
var_dump($creator->tryCreate('bar', $creatable), $creatable);
$creatable = null;
var_dump($creator->tryCreate('qux', $creatable), $creatable);
- Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.7 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.33, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- bool(true)
object(FooCreatable)#4 (0) {
}
bool(true)
object(BarCreatable)#4 (0) {
}
bool(false)
NULL
- Output for 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
- Parse error: syntax error, unexpected '[' in /in/Gu0r3 on line 38
Process exited with code 255. - Output for 5.0.0 - 5.0.5
- Parse error: parse error, unexpected '[' in /in/Gu0r3 on line 38
Process exited with code 255. - Output for 4.4.2 - 4.4.9
- Parse error: syntax error, unexpected T_STRING in /in/Gu0r3 on line 3
Process exited with code 255. - Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1
- Parse error: parse error, unexpected T_STRING in /in/Gu0r3 on line 3
Process exited with code 255. - Output for 4.3.2 - 4.3.4
- Parse error: parse error in /in/Gu0r3 on line 3
Process exited with code 255.
preferences:
224.48 ms | 401 KiB | 342 Q