Traversing a Tree of XML Nodes Using Recursion : DomDocument « XML « PHP






  1. PHP
  2. XML
  3. DomDocument

Traversing a Tree of XML Nodes Using Recursion

 
<?php

$doc = new DomDocument("1.0");
$doc->loadXML( file_get_contents("data.xml") );
$root = $doc->firstChild;
traverse( $root );

function traverse( DomNode $node, $level=0 ){
  handle_node( $node, $level );
 if ( $node->hasChildNodes() ) {
   $children = $node->childNodes;
   foreach( $children as $kid ) {
     if ( $kid->nodeType == XML_ELEMENT_NODE ) {
       traverse( $kid, $level+1 );
     }
   }
 }
}

function handle_node( DomNode $node, $level ) {
  for ( $x=0; $x<$level; $x++ ) {
    print " ";
  }
  if ( $node->nodeType == XML_ELEMENT_NODE ) {
    print $node->tagName."<br />\n";
  }
}
?>








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