<?php
class Singleton {
private static $instanciated = false;
public function __construct()
{
if (self::$instanciated === true) {
throw new RuntimeException('Could not instanciate class');
}
self::$instanciated = true;
}
private $var;
public function get(): int {
return $this->var;
}
public function set(int $value) {
$this->var = $value;
}
}
class Factory {
private $instance = null;
public function getInstance()
{
echo "getInstance()\n";
if ($this->instance === null) {
$this->instance = new Singleton();
}
return $this->instance;
}
}
$factory = new Factory();
$o = $factory->getInstance();
$o->set(5);
$factory2 = new Factory();
$o2 = $factory->getInstance();
var_dump($o2->get());
- Output for 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 - 8.1.27, 8.2.0 - 8.2.17, 8.3.0 - 8.3.4
- getInstance()
getInstance()
int(5)
- Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28
- Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/n4jEW on line 16
Process exited with code 255.
preferences:
219.72 ms | 402 KiB | 253 Q