PHP如何将XML转成数组 php 读取xml php xml parser php 修改xm

 
<document>
 <title>Forty What?</title>
 <from>Joe</from>
 <to>Jane</to>
 
 I know that's the answer -- but what's the question?
 
</document>
XML;

$xml=simplexml_load_string($string);
$data = json_decode(json_encode($xml),TRUE);
var_dump( $xml );
var_dump( $data );

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=57)
array
 'title' => string 'Forty What?' (length=11)
 'from' => string 'Joe' (length=3)
 'to' => string 'Jane' (length=4)
 'body' => string '
 I know that's the answer -- but what's the question?
 ' (length=57)