<?php
class Musket {
private static $instanciated = false;
private $var;
public function __construct()
{
if (self::$instanciated === true) {
throw new RuntimeException('Could not instanciate class');
}
self::$instanciated = true;
}
// Interdiction du clonage
private function __clone()
{
}
public function get(): int {
return $this->var;
}
public function set(int $value) {
$this->var = $value;
}
}
class Factory {
private $instance = null;
public function getInstance()
{
if ($this->instance === null) {
$this->instance = new Musket();
}
return $this->instance;
}
}
$factory = new Factory();
$o = $factory->getInstance();
$o->set(5);
$factory2 = new Factory();
// Génère une exception "Could not instanciate class"
$o2 = $factory2->getInstance();
Fatal error: Uncaught RuntimeException: Could not instanciate class in /in/5FMep:9
Stack trace:
#0 /in/5FMep(34): Musket->__construct()
#1 /in/5FMep(46): Factory->getInstance()
#2 {main}
thrown in /in/5FMep on line 9
Process exited with code 255.
Output for 8.3.5
Warning: PHP Startup: Unable to load dynamic library 'sodium.so' (tried: /usr/lib/php/8.3.5/modules/sodium.so (libsodium.so.23: cannot open shared object file: No such file or directory), /usr/lib/php/8.3.5/modules/sodium.so.so (/usr/lib/php/8.3.5/modules/sodium.so.so: cannot open shared object file: No such file or directory)) in Unknown on line 0
Fatal error: Uncaught RuntimeException: Could not instanciate class in /in/5FMep:9
Stack trace:
#0 /in/5FMep(34): Musket->__construct()
#1 /in/5FMep(46): Factory->getInstance()
#2 {main}
thrown in /in/5FMep on line 9
Process exited with code 255.
Output for 5.5.0 - 5.5.38, 5.6.0 - 5.6.40
Parse error: syntax error, unexpected ':', expecting ';' or '{' in /in/5FMep on line 19
Process exited with code 255.