php的SAX杂记

<?php 
$xmlstr = <<<XML 
<?xml version='1.0' encoding='utf-8' standalone='yes'?> 
<books> 
 <book> 
    <title>PHP完全手册</title> 
    <price>39.8</price> 
    <introduction> 
  一本十分畅销的有关phpweb开发的经典之作，作者根据自己丰富经验而著。 
    </introduction> 
    <bookstore> 
     <weihai>新华书店</weihai> 
     <jinan>科技书店</jinan> 
    </bookstore> 
    <book-img type= "thumbs">php01.jpg</book-img> 
 </book> 
</books> 
XML; 
?>

<?php 
include  "sax_xml.php"; 
 
echo nl2br( "在威海哪里可以买到?\n"); 
$xml= new SimpleXMLElement($xmlstr); 
echo $xml->book[0]->bookstore->weihai; 
 
?>