可以试试添加如下:
curl_setopt($ch, CURLOPT_HTTP_VERSION, CURL_HTTP_VERSION_1_0); // 强制使用 HTTP/1.0
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Expect:')); //头部要送出'Expect: '
curl_setopt($ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_V4 ); //强制使用IP
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