PHP DOMNode insertAfter?

Question

I am a bit stuck on how to reorder nodes. I am trying to add two simple "move item up" and "move item down" functions. While insertBefore() does what I want to move a sibling before the preceding one, what is the easiest way to move one node down in the DOM? Much appreciated!

score 23 · Accepted Answer · answered May 21 '15 at 13:47

23

Code Example:

 try {
        $li->parentNode->insertBefore( $ul, $li->nextSibling);
 } catch(\Exception $e){
        $li->parentNode->appendChild( $ul );
 }

answered May 21 '15 at 13:47

Layke

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7

Actually, you can do only: `$li->parentNode->insertBefore( $ul, $li->nextSibling);` The try..catch block is unnecessary, because if $li->nextSibling is null, insertBefore() will act just like appendChild(). – marcini Jun 23 '15 at 12:04
What if nextSibling is null (i.e. $li is the last in the series)? – IanB Apr 24 '17 at 00:20
If `nextSibling` is null, it means `DOMNode::insertBefore` with second parameter omitted. Without second parameter (refnode), newnode is appended to the children. http://php.net/manual/en/domnode.insertbefore.php (Tested and works as the #1 comment & manual said) – nggit Apr 30 '17 at 22:30

score 0 · Answer 2 · answered Apr 24 '14 at 16:02

0

Okay, stupid me. The easy solution is to just go down in the DOM to the nextSibling of the nextSibling and do the same insertBefore... so this is solved.

answered Apr 24 '14 at 16:02

Erik Pöhler

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PHP DOMNode insertAfter?

2 Answers2