一个接口，能得到返回的xml文件，如何提取有用的内容？

Question

接口调用后，$result= 能得到以下内容：stdClass Object
(
    [out] => <?xml version="1.0" encoding="GB2312"?>
<result>
 <flights>
 <flight orgCity="SHA" departTerm="T2" dstCity="CAN" arrivalTerm="--" airComp="MU" flightno="MU5307" planeType="320" startTime="2012-07-20 07:30" endTime="2013-07-20 09:50" stopNumber="0" mealCode="S">
<cabins><cabin cabinCode="Y" cabinType="0" cabinDiscount="100" cabinName="经济舱" cabinSales="A" ibePrice="1280" encryptString="79fccacuigjjdskf" /></cabins>
<cabin cabinCode="A" cabinType="0" cabinDiscount="250" cabinName="头等折扣舱" cabinSales="A" ibePrice="2830" encryptString="1c9cc629e7f7b1a" ></cabin>
  </flight>
</flights>
  <is_success>T</is_success>
</result>
)以前做这直接读取 xml的，可这种带了一个stdClass Object(  [out] =>不知道应该如何读到各节点内容了

Answer 1

红色代码 是由  print_r($result);得到的， 如果换成echo $result;就会出错Catchable fatal error: Object of class stdClass could not be converted to string in

Answer 2

如果你对对象操作不熟悉，可以先转换为数组，这样会方便一些。
你获取的对象很简单， $result->out 就是这个XML字符串，若是想提取其中的内容，可以尝试字符串提取，或者解析XML为对象再转数组（推荐）。
http://www.php.net/manual/zh/language.oop5.properties.php

Answer 3

直接打印
echo $result->out;作为xml解析
$xml = simplexml_load_string($result->out);
print_r($xml);
SimpleXMLElement Object
(
    [flights] => SimpleXMLElement Object
        (
            [flight] => SimpleXMLElement Object
                (
                    [@attributes] => Array
                        (
                            [orgCity] => SHA
                            [departTerm] => T2
                            [dstCity] => CAN
                            [arrivalTerm] => --
                            [airComp] => MU
                            [flightno] => MU5307
                            [planeType] => 320
                            [startTime] => 2012-07-20 07:30
                            [endTime] => 2013-07-20 09:50
                            [stopNumber] => 0
                            [mealCode] => S
                        )                    [cabins] => SimpleXMLElement Object
                        (
                            [0] => SimpleXMLElement Object
                                (
                                    [@attributes] => Array
                                        (
                                            [cabinCode] => Y
                                            [cabinType] => 0
                                            [cabinDiscount] => 100
                                            [cabinName] => 经济舱
                                            [cabinSales] => A
                                            [ibePrice] => 1280
                                            [encryptString] => 79fccacuigjjdskf
                                        )                                )                        )                    [cabin] => SimpleXMLElement Object
                        (
                            [@attributes] => Array
                                (
                                    [cabinCode] => A
                                    [cabinType] => 0
                                    [cabinDiscount] => 250
                                    [cabinName] => 头等折扣舱
                                    [cabinSales] => A
                                    [ibePrice] => 2830
                                    [encryptString] => 1c9cc629e7f7b1a
                                )                        )                )        )    [is_success] => T
)

Answer 4

请问如何解析XML为对象再转数组

Answer 5

$xml = simplexml_load_string($result->out);
// 转换对象所有属性为数组
function obj2arr($obj)
{
    $arr = get_object_vars($obj);
    foreach($arr as &$child){
        is_object($child) && ( $child = obj2arr($child) );
    }
    return $arr;
}
$data = obj2arr($xml);
接着你就可以用 
$data['flights']['flight']['cabin']['@attributes']['cabinName'];
得到 头等折扣舱 当然，不转换为数组也是可以直接操作的，不过这就需要考验你的基本功

Answer 6

显示这一句出错：
simplexml_load_string() [function.simplexml-load-string]: input conversion failed due to input error

Answer 7

你的 php 小于 5.3
只能识别 utf-8 的 xml 
所以报错

Answer 8

$result->out = str_replace('encoding="GB2312"', 'encoding="utf-8"', iconv('gbk', 'utf-8', $result->out));

Answer 9

echo $data['flights']['flight']['cabin']['@attributes']['cabinName'];显示不出来任何数据，怎么回事