php - Assigning a node to an arbitrary node, how to with Libxml2? -


this question use php, problems , algorithms valid many other libxml2 , w3c dom implementations.

core problem: there no $node->replacethisby($othernode). there "replace text" (using nodevalue property) , replacechild() method — not obviuos neither simple use.

in code below, second loop works, need copy nodes 1 dom tree (simulated clone) one.

$doc = new domdocument('1.0', 'utf-8'); $doc->load($filexml); $xp = new domxpath($doc); $lst = $xp->query("//td");  $z =  clone $lst->item(2);   // big , complex node          // needs clone freeze node content (before change also).  // not work: foreach ($lst $node)     $node = $z;  // no error messages!     //error: $node->parentnode->replacechild($z,$node);  // works though: foreach ($lst $node)     $node->nodevalue = $z->nodevalue;

similar questions:

nodevalue property, changes text-value. change tags , contents, need lot more instructions -- domdocument not friendly (!) ... need import clone, , clone in loop: solved!

  $doc = new domdocument('1.0', 'utf-8');   $doc->loadxml($xmlfrag);    $xp = new domxpath($doc);   $lst = $xp->query("//p");   $import = $doc->importnode( $lst->item(1)->clonenode(true) , true);    foreach ($lst $node) {     $tmp = clone $import; // clone because if same, ignores loop.     $node->parentnode->replacechild($tmp,$node);   }   print $doc->savexml();

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