操作方法:将 curl var_dump 输出分离到不同的变量中

在这里，我想将字符串输出分成三个不同的变量。请求采用 XML 格式。目前，我在一行中以字符串形式输出，并带有一些空格。但是我希望输出是分开的。

这是我的代码：

<?php
$api_entry_point = "https://api-sandbox.instantmobilizer.com/v1";
$user = "abcde";
$pass = "abcde12345";
$url = $api_entry_point."/create_site";
$xml= "<?xml version='1.0'?>
<request>
    <subscription>
        <end_date>+1 month</end_date>
        <billing_cycle>FT</billing_cycle>
        <service_level>1</service_level>
        <promotion_code>free_trial:armo</promotion_code>
        <currency>USD</currency>
        <contract_type>FT</contract_type>
        <spare_1/>
        <spare_2/>
        <sub_reseller_id>yoyo</sub_reseller_id>
        <reseller_reference>111199999</reseller_reference>
        <mapping>
            <source_domain>testingnet.com</source_domain>
            <mobile_domain>testingvyoyo.net</mobile_domain>
            <properties />
            <aliases />
        </mapping>
    </subscription>
</request>";

$ch = curl_init($url);
curl_setopt($ch, CURLOPT_USERPWD, "{$user}:{$pass}");
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $xml);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, 0);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1);
$output = curl_exec($ch);
curl_close($ch);
var_dump($output);
/*echo '<pre>'.var_dump($output).'</pre>';*/
?>

电流输出为

string(184) " ok 985161e2980c65fa 2016-03-18 "