php 使用simplexml_load_string转换xml数据格式失败

 本文介绍如何使用php函数解析xml数据为数组。

<?php

$a = '<xml><ToUserName><![CDATA[ww8b77afac71336111]]></ToUserName><FromUserName><![CDATA[sys]]></FromUserName><CreateTime>1736328669</CreateTime><MsgType><![CDATA[event]]></MsgType><Event><![CDATA[change_external_contact]]></Event><ChangeType><![CDATA[del_external_contact]]></ChangeType><UserID><![CDATA[Xu]]></UserID><ExternalUserID><![CDATA[woh0dIDAAA4kq6S_aXw1UkX7_qXb22ng]]></ExternalUserID></xml>';

$xmlObject = simplexml_load_string($a,'SimpleXMLElement', LIBXML_NOBLANKS);
$json = json_encode($xmlObject);
var_dump($json);
$array = json_decode($json, true);
print_r($array);

打印后发现xml内容中带有CDATA的好像不能正常解析 

string(133) "{"ToUserName":{},"FromUserName":{},"CreateTime":"1736328669","MsgType":{},"Event":{},"ChangeType":{},"UserID":{},"ExternalUserID":{}}"
Array
(
    [ToUserName] => Array
        (
        )

    [FromUserName] => Array
        (
        )

    [CreateTime] => 1736328669
    [MsgType] => Array
        (
        )

    [Event] => Array
        (
        )

    [ChangeType] => Array
        (
        )

    [UserID] => Array
        (
        )

    [ExternalUserID] => Array
        (
        )

)
 

期初我以为是这个函数有问题，随后我查阅了官方文档，https://www.php.net/manual/zh/libxml.constants.php 

看起来不错，我来替换下尝试一下

string(239) "{"ToUserName":"ww8b77afac713361bd","FromUserName":"sys","CreateTime":"1736328669","MsgType":"event","Event":"change_external_contact","ChangeType":"del_external_contact","UserID":"XuBin","ExternalUserID":"woh0dIDAAA4kq6S_aXw1UkX7_qXb22ng"}"
Array
(
    [ToUserName] => ww8b77afac71336111
    [FromUserName] => sys
    [CreateTime] => 1736328669
    [MsgType] => event
    [Event] => change_external_contact
    [ChangeType] => del_external_contact
    [UserID] => Xu
    [ExternalUserID] => woh0dIDAAA4kq6S_aXw1UkX7_qXb22ng
)
 

完美