   #PHP Manual DOM XML functions DomNode->has_child_nodes
   DomNode->is_blank_node

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                            DomNode->insert_before

   (no version information, might be only in CVS)
   DomNode->insert_before --  Inserts new node as child

Description

   object DomNode->insert_before ( object newnode, object refnode)

   This function inserts the new node newnode right before the node
   refnode. The return value is the inserted node. If you plan to do
   further modifications on the appended child you must use the returned
   node.

   (PHP >= 4.3 only) If newnode already is part of a document, it will be
   first unlinked from its existing context. If refnode is NULL, then
   newnode will be inserted at the end of the list of children.

   domnode_insert_before() is very similar to domnode_append_child() as
   the following example shows which does the same as the example at
   domnode_append_child().

   Example 1. Adding a child
   <?php
   include("example.inc");
   if (!$dom = domxml_open_mem($xmlstr)) {
     echo "Error while parsing the document\n";
     exit;
   }
   $elements = $dom->get_elements_by_tagname("informaltable");
   print_r($elements);
   $element = $elements[0];
   $newnode = $element->insert_before($element, $element);
   $children = $newnode->children();
   $attr = $children[1]->set_attribute("align", "left");
   echo "<PRE>";
   $xmlfile = $dom->dump_mem();
   echo htmlentities($xmlfile);
   echo "</PRE>";
   ?>

   See also domnode_append_child().
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