From libcurl version 7.62.0 and later, it supports DNS-over-HTTPS with
[`CURLOPT_DOH_URL`](https://curl.se/libcurl/c/CURLOPT_DOH_URL.html) option.
This adds integration with the `CURLOPT_DOH_URL` option if libcurl version
is >= 7.62.0 (0x073E00).
For reference, Ubuntu 20.04+ `libcurl4-openssl-dev`-based PHP builds use Curl 7.68.
Closes GH-6612.
prefix similar to hexadecimal ("0x"/"0X) and binary ("0b"/"0B") integer literals
RFC: https://wiki.php.net/rfc/explicit_octal_notation
+- Curl:
+ . Added CURLOPT_DOH_URL option.
+
- hash:
. The following functions have changed signatures:
REGISTER_CURL_CONSTANT(CURLOPT_TLS13_CIPHERS);
#endif
+#if LIBCURL_VERSION_NUM >= 0x073E00 /* Available since 7.62.0 */
+ REGISTER_CURL_CONSTANT(CURLOPT_DOH_URL);
+#endif
+
#if LIBCURL_VERSION_NUM >= 0x074000 /* Available since 7.64.0 */
REGISTER_CURL_CONSTANT(CURLOPT_HTTP09_ALLOWED);
#endif
#endif
#if LIBCURL_VERSION_NUM >= 0x072800 /* Available since 7.40.0 */
case CURLOPT_UNIX_SOCKET_PATH:
+#endif
+#if LIBCURL_VERSION_NUM >= 0x073E00 /* Available since 7.62.0 */
+ case CURLOPT_DOH_URL:
#endif
case CURLOPT_KRBLEVEL:
{