PHP:XML与数组互相转换

目录
  1. 把XML转化为数组
  2. 把数据转换为XML格式的数据

把XML转化为数组

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function xmlToArray($xml, $recursive = false )
{
    if (!$recursive){
        $array = simplexml_load_string($xml);
    } else  {
        $array = $xml;
    }

    $newArray = array ();
    $array = (array) $array ;
    foreach ($array as $key => $value ) {
        $value = (array) $value ;
        if (isset ($value [0])){
            $newArray [$key] = trim($value [0]) ;
        } else {
            $newArray [$key] = self::xmlToArray($value, true) ;
        }
    }
    return $newArray ;
}

把数据转换为XML格式的数据

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function arraytoxml($array, $tag)
{
    function ia2xml($array)
    {
        $xml = '';
        foreach ($array as $key=>$value) {
            if (is_array($value)) {
                $xml.="<$key>".ia2xml($value)."</$key>";
            } else {
                $xml.="<$key>".$value."</$key>";
            }
        }
        return $xml;
    }

    return simplexml_load_string("<$tag>".ia2xml($array)."</$tag>");
}

$test['type']='lunch';
$test['time']='12:30';
$test['menu']=array('entree'=>'salad', 'maincourse'=>'steak');

header('Content-type:text/xml; charset=utf-8');
//  echo arraytoxml($test,"meal")->asXML();

$string = '<?xml version="1.0"?> 
<document>
<title>Forty What?</title>
<from>Joe</from>
<to>Jane</to>
<body>
I know that the answer -- but what the question?
</body>
</document>';

//echo $string;
print_r(xmlToArray($string));