ReflectionFunction::getClosure
  (PHP 5 >= 5.4.0, PHP 7, PHP 8)
ReflectionFunction::getClosure — Returns a dynamically created closure for the function
  
 
  说明
  
   public ReflectionFunction::getClosure(): 
Closure 
  
  
  
 
 
  返回值
  
   Returns Closure.
   Returns null in case of an error.