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<?php trait Singleton { private static $instance; private function __construct() {} private function __clone() {} private function __wakeup() {} public function getInstance() { if (empty(static::$instanse)) { return new static(); } else { return static::$instance; } } } class Foo { use Singleton; private $bar = 2; public function incBar() { $this->bar++; } public function getBar() { return $this->bar."<br/>"; } } $foo = Foo::getInstance(); echo $foo->getBar(); $foo->incBar(); echo $foo->getBar();
Output for git.master, git.master_jit, rfc.property-hooks
Warning: The magic method Singleton::__wakeup() must have public visibility in /in/AJmhE on line 9 Fatal error: Uncaught Error: Non-static method Foo::getInstance() cannot be called statically in /in/AJmhE:38 Stack trace: #0 {main} thrown in /in/AJmhE on line 38
Process exited with code 255.

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