PHP 操作XML文档

<<<操作符需PHP5.3以上版本才能支持,下面程序在wamp环境下测试完成。

<?php

// Set the content type to be XML, so that the browser will recognise it as XML.

header( "content-type: application/xml; charset=GBK" );  显示$xml对象时此语句要注释掉
$string = <<<XML
<?xml version='1.0' encoding='GBK'?>       此行要顶格写
  <root>
    <title>Forty What?</title>
    <from>Joe</from>
    <to>Jane</to>
    <body>I know that's the answer -- but what's the question?</body>
  </root>
XML;

echo $string;              --显示输出受header语句有影响。
//var_dump($string);

$xml = simplexml_load_string($string);
//var_dump($xml);      --如header语句保留,对象结果无法显示
?>

结果输出(echo 显示)

This XML file does not appear to have any style information associated with it. The document tree is shown below.
<root>
<title>Forty What?</title>
<from>Joe</from>
<to>Jane</to>
<body>
I know that's the answer -- but what's the question?
</body>
</root>
var_dump($string)结果显示

string

 '<?xml version='1.0' encoding='GBK'?>   
     <root>  
        <title>Forty What?</title>  
        <from>Joe</from>  
        <to>Jane</to>  
        <body>    I know that's the answer -- but what's the question?  </body>  
     </root> ' (length=243)


Joe Jane I know that's the answer -- but what's the question? 

var_dump($xml) 结果显示

object(SimpleXMLElement)[1]
  public 'title' => 

string

 'Forty What?' (length=11)
  public 'from' => 

string

 'Joe' (length=3)
  public 'to' => 

string

 'Jane' (length=4)
  public 'body' => 

string

 '    I know that's the answer -- but what's the question?  ' (length=58)

posted on   xihong  阅读(152)  评论(0编辑  收藏  举报

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