ใช้ภาษา php เขียน select ข้อมูล จาก xml ออกมาดู โดยกำหนดเงื่อนไข ทำยังไงคับ

<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<?
$xml = new DOMDocument('1.0','UTF-8');
$xml->load('testbook.xml');
$bookshop = $xml->getElementsByTagName("root");
$count = 1;
foreach($bookshop as $child)
{
	$book = $child->getElementsByTagName("content");
	foreach($book as $nodebook)
	{
		$title = $nodebook->getElementsByTagName("title");
		foreach($title as $nodetitle)
		{
		if($nodetitle == "บร๊ะเจ้า")
		{
		echo $nodetitle->nodeValue;	
		}
		}
		$price = $nodebook->getElementsByTagName("tag");
		foreach($price as $nodeprice)
		{
		echo $nodeprice->nodeValue;	
		}
		$detail = $nodebook->getElementsByTagName("detail");
		foreach($detail as $nodedetail)
		{
		echo $nodedetail->nodeValue;
		}
		
		echo "<a href='".$_SERVER['PHP_SELF']."?del=$count' onClick='return confirm(\"Delete Item.\")'> ลบ </a>";
		echo $count++;
	}
}

	if(isset($_GET['id']))
		include("edit.php");
	elseif(isset($_GET['del']))
		include("delete.php");
	else
		include("addxml1.php");
?>