<?php


function traverseSubTree($node)
{
    if ($node->nodeType == XML_TEXT_NODE) {
	print "content : $node->nodeValue<br>";
    } else {
	print "current node name : $node->nodeName()<br>";
	if ($node->hasChildNodes()) {
	    //print "Current node has childs... <br>";
	    $childs = $node->childNodes;
	    //print "retrieved childs nodes... <br>";
	    //print "$childs";
	    foreach ($childs as $childNode) {
		traverseSubTree($childNode);
	    }
	}
    }
}

function displaySubTree($node)
{
    if ($node->hasChildNodes()) {
	print "current node name : $node->nodeName()<br>";
	$childs = $node->childNodes;
	foreach ($childs as $childNode) {
	    traverseSubTree($childNode);
	}
    } else {
	if ($node->nodeType == XML_TEXT_NODE) {
	    print "content : $node->nodeValue<br>";
	}
    }
}


$dom = new DomDocument();
print ("dom created ... <br>");

//$file = "f1-drivers.xml";
//$file = "file.xml";
//$file = "file2.xml";
$file = "php-biblio.xml";
//$file = "wddx.xml";
//$file = "book.xml";

$dom->load($file);

print ("file loaded with filename... : $file<br>");

//$titles = $dom->getElementsByTagName("lastname");
// printf("retrieving drivers name... <br>");

$domnode = $dom->documentElement;
printf ("retrieving document element....<br>");

//$domnode = $dom->firstChild;

//$domnode = $domnode->firstChild;

if ($domnode->hasChildNodes() )
{
    print "This document has childs ... <br>";
}

echo "displaying tree...<br>\n";

if (is_null($domnode)) {
    print "node is null <br>";
} else {
    print "Node name : $domnode->nodeName<br>";
}


$compteur = 0;

echo  'counter<br>';

traverseSubTree($domnode);

print "<br><br>"

//displaySubTree($domnode);

//print "counter = $counter<br>";

//$compteur += 1;

//print ("counter = $compteur<br>");

//print("Fin de l'analyse...");
?>