Question

当我使用curl，通过php发出HTTP GET请求时，我得到了这个回复：

<?xml version="1.0" encoding="ISO-8859-1"?>
<root>
    <apiStatus>ok</apiStatus>
    <matches>1</matches>
    <unit type="campaign">
        <id>42</id>
        <name>think_deep</name>
    </unit>
    <units>1</units>
</root>

当我尝试获取此输出时，为了创建一个SimpleXMLElement，我得到了这个错误：

PHP Warning:  SimpleXMLElement::__construct(): Entity: line 1: parser error : Start tag expected, '<' not found in /home/simone/Development/dotadv/cxense/scripts/SearchForCampaign.php on line 35
PHP Warning:  SimpleXMLElement::__construct(): 1 in /home/simone/Development/dotadv/cxense/scripts/SearchForCampaign.php on line 35
PHP Warning:  SimpleXMLElement::__construct(): ^ in /home/simone/Development/dotadv/cxense/scripts/SearchForCampaign.php on line 35
PHP Fatal error:  Uncaught exception 'Exception' with message 'String could not be parsed as XML' in /home/simone/Development/dotadv/cxense/scripts/SearchForCampaign.php:35
Stack trace:
#0 /home/simone/Development/dotadv/cxense/scripts/SearchForCampaign.php(35): SimpleXMLElement->__construct('1')
#1 {main} thrown in /home/simone/Development/dotadv/cxense/scripts/SearchForCampaign.php on line 35

使用var_dump（）我发现输出是：

<?xml version="1.0" encoding="ISO-8859-1"?>
<root>
    <apiStatus>ok</apiStatus>
    <matches>1</matches>
    <unit type="campaign">
        <id>42</id>
        <name>think_deep</name>
    </unit>
    <units>1</units>
</root>
bool(true)
bool(true)

那么，......这是什么问题？

$curl = curl_init();
$url = 'http://stage.emediate.eu' . $request->uri();
curl_setopt_array($curl, [
    CURLOPT_URL => $url,
]);

$resp = curl_exec($curl);
var_dump($resp, true);

Answer 1

因为您没有设置选项CURLOPT_RETURNTRANSFER，所以curl_exec会因请求而返回true或false。因此，$ resp变为true，我们可以在var_dump($resp, true);

的输出中看到

bool(true)
bool(true)

要接收xml，请将代码更改为

curl_setopt_array($curl, [
    CURLOPT_URL => $url,
    CURLOPT_RETURNTRANSFER => 1
]);

服务器使用XML响应，SimpleXMLElement无法转换为Object

1 个答案: