software-market/public/test.php

<?php
$ch = curl_init('https://api.mch.weixin.qq.com/mmpaymkttransfers/promotion/transfers');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CAINFO, '/etc/ssl/certs/ca-bundle.crt');
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);

$response = curl_exec($ch);
if ($response === false) {
    echo 'cURL Error: ' . curl_error($ch);
} else {
    echo "Success!\n";
    var_dump($response);
}
curl_close($ch);