The Dom\AdjacentPosition Enum
 
 
  
   简介
   
    The AdjacentPosition enum is used to specify
    where, relative to the context element, insertion should be performed
    using Dom\Element::insertAdjacentElement()
    or Dom\Element::insertAdjacentText().
   
   
  
   注解摘要
   
    enum AdjacentPosition
{
    
         case  BeforeBegin
     ;
/** 
      Insert before the context element.
      This is only possible if the element is in a document and has a parent.
      */
    
    
         case  AfterBegin
     ;
/** 
      Insert before the first child of the context element.
      */
    
    
         case  BeforeEnd
     ;
/** 
      Insert after the last child of the context element.
      */
    
    
         case  AfterEnd
     ;
/** 
      Insert after the context element.
      This is only possible if the element is in a document and has a parent.
      */
    
   }
 
  
 
    
官方地址:https://www.php.net/manual/en/enum.dom.adjacentposition.php