| public hasSingleton ( string $class, boolean $checkInstance = false ) : boolean | ||
| $class | string | class name, interface name or alias name |
| $checkInstance | boolean | whether to check if the singleton has been instantiated. |
| return | boolean | whether the given name corresponds to a registered singleton. If `$checkInstance` is true, the method should return a value indicating whether the singleton has been instantiated. |
public function hasSingleton($class, $checkInstance = false)
{
return $checkInstance ? isset($this->_singletons[$class]) : array_key_exists($class, $this->_singletons);
}