CURLOPT_PROXY_SSL_VERIFYHOST

CURLOPT_PROXY_SSL_VERIFYHOST is one of the accepted parameters for curl_setopt parameter #2.

CURLOPT_PROXY_SSL_VERIFYHOST — Set to 2 to verify in the HTTPS proxy's certificate name fields against the proxy name. When set to 0 the connection succeeds regardless of the names used in the certificate. Use that ability with caution! 1 treated as a debug option in curl 7.28.0 and earlier. From curl 7.28.1 to 7.65.3 CURLE_BAD_FUNCTION_ARGUMENT is returned. From curl 7.66.0 onwards 1 and 2 is treated as the same value. In production environments the value of this option should be kept at 2 (default value). Available as of PHP 7.3.0 and cURL 7.52.0

CURLOPT_PROXY_SSL_VERIFYHOST = 249;