这是你预期的答案。网址不正确，因为您使用&代替 ？。然后你告诉cURL连接到一个代理在127.0.0.1（通常没有）。而且ssl证书是自签名的，因此您必须将CURLOPT_SSL_VERIFYHOST和CURLOPT_SSL_VERIFYPEER设置为0和false。

Here is your expected answer. The url isn't correct, because you're using & instead of ?. And then you're telling cURL to connect to a proxy on 127.0.0.1 (there is none, usually). And the ssl certificate is self-signed, so you have to set CURLOPT_SSL_VERIFYHOST and CURLOPT_SSL_VERIFYPEER to 0 and false.

此脚本适用于：

<?php
$url = 'https://api.wlvpn.com/v2/customers?api-key=my-api-key';
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
$output = curl_exec($ch);
$curl_error = curl_error($ch);
curl_close($ch);

print_r($output);
print_r($curl_error);
?>