<?php
interface IWidget
{
}
class WidgetA implements IWidget
{
}
class WidgetB implements IWidget
{
}
interface IWidgetFactory
{
function tryCreateWidget($someInput, IWidget &$widget = null);
}
class WidgetAFactory implements IWidgetFactory
{
public function tryCreateWidget($someInput, IWidget &$widget = null)
{
if ($someInput < 7) {
$widget = new WidgetA();
return true;
}
return false;
}
}
class WidgetBFactory implements IWidgetFactory
{
public function tryCreateWidget($someInput, IWidget &$widget = null)
{
if ($someInput > 10) {
$widget = new WidgetB();
return true;
}
return false;
}
}
class WidgetFactoryAggregate implements IWidgetFactory
{
private $widgetFactories = [];
function __construct(array $widgetFactories)
{
$this->widgetFactories = $widgetFactories;
}
public function tryCreateWidget($someInput, IWidget &$widget = null)
{
foreach ($this->widgetFactories as $widgetFactory) {
if ($widgetFactory->tryCreateWidget($someInput)) {
return true;
}
}
return false;
}
}
$widgetFactory = new WidgetFactoryAggregate([
new WidgetAFactory(),
new WidgetBFactory(),
]);
foreach ([1, 5, 15, 9] as $someInput) {
$widget = null;
if ($widgetFactory->tryCreateWidget($someInput, $widget)) {
var_dump($widget);
continue;
}
var_dump("Failed to create widget for {$someInput}");
break;
}
- 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 - 7.1.20, 7.2.6 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.19, 8.3.0 - 8.3.7
- NULL
NULL
NULL
string(29) "Failed to create widget for 9"
- 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/iSsIQ on line 56
Process exited with code 255. - Output for 5.0.0 - 5.0.5
- Parse error: parse error, unexpected '[' in /in/iSsIQ on line 56
Process exited with code 255. - Output for 4.4.2 - 4.4.9
- Parse error: syntax error, unexpected T_STRING in /in/iSsIQ 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/iSsIQ on line 3
Process exited with code 255. - Output for 4.3.2 - 4.3.4
- Parse error: parse error in /in/iSsIQ on line 3
Process exited with code 255.
preferences:
210.16 ms | 401 KiB | 315 Q