# Constantes predefinidas

Estas constantes están definidas por esta extensión y estarán disponibles sólo cuando la extensión haya sido compilada con PHP, o bien sea cargada dinámicamente en ejecución.

Descriptions and uses for these constants are described within the curl_setopt(), curl_multi_setopt() and curl_getinfo() documentation.

`CURLOPT_AUTOREFERER` (int)
`CURLOPT_COOKIESESSION` (int)
`CURLOPT_DOH_URL` (int)
  Provides the DNS-over-HTTPS URL. Available as of PHP 8.1.0 and cURL 7.62.0.
`CURLOPT_DOH_SSL_VERIFYHOST` (int)
  Verify the DNS-over-HTTPS server's SSL certificate name fields against the host name. Available as of PHP 8.2.0 and cURL 7.76.0.
`CURLOPT_DOH_SSL_VERIFYPEER` (int)
  Verify the authenticity of the DNS-over-HTTPS server's SSL certificate. Available as of PHP 8.2.0 and cURL 7.76.0.
`CURLOPT_DOH_SSL_VERIFYSTATUS` (int)
  Tell cURL to verify the status of the DNS-over-HTTPS server certificate using the "Certificate Status Request" TLS extension (OCSP stapling). Available as of PHP 8.2.0 and cURL 7.76.0.
`CURLOPT_DNS_USE_GLOBAL_CACHE` (int)
`CURLOPT_DNS_CACHE_TIMEOUT` (int)
`CURLOPT_FTP_SSL` (int)
`CURLFTP_CREATE_DIR` (int)
  Available since PHP 7.0.7 and cURL 7.19.3
`CURLFTP_CREATE_DIR_NONE` (int)
  Available since PHP 7.0.7 and cURL 7.19.3
`CURLFTP_CREATE_DIR_RETRY` (int)
  Available since PHP 7.0.7 and cURL 7.19.3
`CURLFTPSSL_TRY` (int)
`CURLFTPSSL_ALL` (int)
`CURLFTPSSL_CONTROL` (int)
`CURLFTPSSL_NONE` (int)
`CURLFTPMETHOD_DEFAULT` (int)
  Available as of PHP 8.2.0 and cURL 7.15.3.
`CURLOPT_PRIVATE` (int)
`CURLOPT_FTPSSLAUTH` (int)
`CURLOPT_PORT` (int)
`CURLOPT_FILE` (int)
`CURLOPT_INFILE` (int)
`CURLOPT_INFILESIZE` (int)
`CURLOPT_ISSUERCERT_BLOB` (int)
  Issuer SSL certificate from memory blob. Available as of PHP 8.1.0 and cURL 7.71.0.
`CURLOPT_URL` (int)
`CURLOPT_PROXY` (int)
`CURLOPT_PROXY_ISSUERCERT` (int)
  Proxy issuer SSL certificate filename. Available as of PHP 8.1.0 and cURL 7.71.0.
`CURLOPT_PROXY_ISSUERCERT_BLOB` (int)
  Proxy issuer SSL certificate from memory blob. Available as of PHP 8.1.0 and cURL 7.71.0.
`CURLOPT_PROXY_SSLCERT_BLOB` (int)
  SSL proxy client certificate from memory blob. Available as of PHP 8.1.0 and cURL 7.71.0.
`CURLOPT_PROXY_SSLKEY_BLOB` (int)
  Private key for proxy cert from memory blob. Available as of PHP 8.1.0 and cURL 7.71.0.
`CURLOPT_VERBOSE` (int)
`CURLOPT_ALTSVC` (int)
  Available as of PHP 8.2.0 and cURL 7.64.1.
`CURLOPT_ALTSVC_CTRL` (int)
  Available as of PHP 8.2.0 and cURL 7.64.1.
`CURLALTSVC_H1` (int)
  Available as of PHP 8.2.0 and cURL 7.64.1.
`CURLALTSVC_H2` (int)
  Available as of PHP 8.2.0 and cURL 7.64.1.
`CURLALTSVC_H3` (int)
  Available as of PHP 8.2.0 and cURL 7.64.1.
`CURLALTSVC_READONLYFILE` (int)
  Available as of PHP 8.2.0 and cURL 7.64.1.
`CURLOPT_HEADER` (int)
`CURLOPT_HTTPHEADER` (int)
`CURLOPT_NOPROGRESS` (int)
`CURLOPT_NOBODY` (int)
`CURLOPT_FAILONERROR` (int)
`CURLOPT_UPLOAD` (int)
`CURLOPT_UPLOAD_BUFFERSIZE` (int)
  Available as of PHP 8.2.0 and cURL 7.62.0
`CURLOPT_POST` (int)
`CURLOPT_FTPLISTONLY` (int)
`CURLOPT_FTPAPPEND` (int)
`CURLOPT_FTP_CREATE_MISSING_DIRS` (int)
`CURLOPT_NETRC` (int)
`CURLOPT_FOLLOWLOCATION` (int)
  This constant is not available when open_basedir is enabled.
`CURLOPT_FTPASCII` (int)
`CURLOPT_PUT` (int)
`CURLOPT_MIME_OPTIONS` (int)
  Available as of PHP 8.3.0 and cURL 7.81.0
`CURLOPT_MUTE` (int)
  Removed as of cURL 7.15.5; use `CURLOPT_RETURNTRANSFER` instead.
`CURLOPT_USERPWD` (int)
`CURLOPT_PROXYUSERPWD` (int)
`CURLOPT_RANGE` (int)
`CURLOPT_TIMEOUT` (int)
`CURLOPT_TIMEOUT_MS` (int)
`CURLOPT_TCP_NODELAY` (int)
`CURLOPT_POSTFIELDS` (int)
`CURLOPT_PROGRESSFUNCTION` (int)
`CURLOPT_REFERER` (int)
`CURLOPT_USERAGENT` (int)
`CURLOPT_FTPPORT` (int)
`CURLOPT_FTP_USE_EPSV` (int)
`CURLOPT_LOW_SPEED_LIMIT` (int)
`CURLOPT_LOW_SPEED_TIME` (int)
`CURLOPT_RESUME_FROM` (int)
`CURLOPT_COOKIE` (int)
`CURLOPT_COOKIELIST` (int)
  Available since cURL 7.14.1
`CURLOPT_SSLCERT` (int)
`CURLOPT_SSLCERT_BLOB` (int)
  SSL client certificate from memory blob. Available as of PHP 8.1.0 and cURL 7.71.0.
`CURLOPT_SSLCERTPASSWD` (int)
`CURLOPT_SSLKEY_BLOB` (int)
  Private key for client cert from memory blob. Available as of PHP 8.1.0 and cURL 7.71.0.
`CURLOPT_WRITEHEADER` (int)
`CURLOPT_WS_OPTIONS` (int)
  Available as of PHP 8.3.0 and cURL 7.86.0
`CURLOPT_SSL_VERIFYHOST` (int)
`CURLOPT_COOKIEFILE` (int)
`CURLOPT_SSLVERSION` (int)
`CURL_SSLVERSION_DEFAULT` (int)
`CURL_SSLVERSION_TLSv1` (int)
`CURL_SSLVERSION_SSLv2` (int)
`CURL_SSLVERSION_SSLv3` (int)
`CURL_SSLVERSION_TLSv1_0` (int)
`CURL_SSLVERSION_TLSv1_1` (int)
`CURL_SSLVERSION_TLSv1_2` (int)
`CURL_SSLVERSION_TLSv1_3` (int)
`CURLOPT_TIMECONDITION` (int)
`CURLOPT_TIMEVALUE` (int)
`CURLOPT_CUSTOMREQUEST` (int)
`CURLOPT_STDERR` (int)
`CURLOPT_TRANSFERTEXT` (int)
`CURLOPT_RETURNTRANSFER` (int)
`CURLOPT_QUICK_EXIT` (int)
  Available as of PHP 8.3.0 and cURL 7.87.0
`CURLOPT_QUOTE` (int)
`CURLOPT_POSTQUOTE` (int)
`CURLOPT_INTERFACE` (int)
`CURLOPT_KRB4LEVEL` (int)
`CURLOPT_HTTPPROXYTUNNEL` (int)
`CURLOPT_FILETIME` (int)
`CURLOPT_WRITEFUNCTION` (int)
`CURLOPT_READFUNCTION` (int)
`CURLOPT_PASSWDFUNCTION` (int)
  Removed as of PHP 7.3.0.
`CURLOPT_HEADERFUNCTION` (int)
`CURLOPT_MAXAGE_CONN` (int)
  Available as of PHP 8.2.0 and cURL 7.65.0
`CURLOPT_MAXFILESIZE_LARGE` (int)
  Available as of PHP 8.2.0 and cURL 7.11.0
`CURLOPT_MAXLIFETIME_CONN` (int)
  Available as of PHP 8.2.0 and cURL 7.80.0
`CURLOPT_MAXREDIRS` (int)
`CURLOPT_MAXCONNECTS` (int)
`CURLOPT_FRESH_CONNECT` (int)
`CURLOPT_FORBID_REUSE` (int)
`CURLOPT_RANDOM_FILE` (int)
`CURLOPT_EGDSOCKET` (int)
`CURLOPT_CONNECTTIMEOUT` (int)
`CURLOPT_CONNECTTIMEOUT_MS` (int)
`CURLOPT_SSL_VERIFYPEER` (int)
`CURLOPT_CA_CACHE_TIMEOUT` (int)
  Available as of PHP 8.3.0 and cURL 7.87.0
`CURLOPT_CAINFO` (int)
`CURLOPT_CAINFO_BLOB` (int)
  Available as of PHP 8.2.0 and cURL 7.77.0
`CURLOPT_CAPATH` (int)
`CURLOPT_COOKIEJAR` (int)
`CURLOPT_SSL_CIPHER_LIST` (int)
`CURLOPT_SSL_EC_CURVES` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLOPT_BINARYTRANSFER` (int)
`CURLOPT_NOSIGNAL` (int)
`CURLOPT_PROXYTYPE` (int)
  Available as of cURL 7.10.
`CURLOPT_BUFFERSIZE` (int)
`CURLOPT_HTTPGET` (int)
`CURLOPT_HTTP_VERSION` (int)
`CURLOPT_HSTS` (int)
  Available as of PHP 8.2.0 and cURL 7.74.0
`CURLOPT_HSTS_CTRL` (int)
  Available as of PHP 8.2.0 and cURL 7.74.0
`CURLHSTS_ENABLE` (int)
  Available as of PHP 8.2.0 and cURL 7.74.0
`CURLHSTS_READONLYFILE` (int)
  Available as of PHP 8.2.0 and cURL 7.74.0
`CURLOPT_SSLKEY` (int)
`CURLOPT_SSLKEYTYPE` (int)
`CURLOPT_SSLKEYPASSWD` (int)
`CURLOPT_SSLENGINE` (int)
`CURLOPT_SSLENGINE_DEFAULT` (int)
`CURLOPT_SSLCERTTYPE` (int)
`CURLOPT_CRLF` (int)
`CURLOPT_ENCODING` (int)
`CURLOPT_PROXYPORT` (int)
`CURLOPT_UNRESTRICTED_AUTH` (int)
`CURLOPT_FTP_USE_EPRT` (int)
`CURLOPT_HTTP200ALIASES` (int)
`CURLOPT_HTTPAUTH` (int)
`CURLOPT_AWS_SIGV4` (int)
  Available as of PHP 8.2.0 and cURL 7.75.0
`CURLAUTH_BASIC` (int)
`CURLAUTH_DIGEST` (int)
`CURLAUTH_GSSNEGOTIATE` (int)
`CURLAUTH_NEGOTIATE` (int)
  Available as of PHP 7.0.7 and cURL 7.38.0.
`CURLAUTH_NTLM` (int)
`CURLAUTH_NTLM_WB` (int)
  Available as of PHP 7.0.7 and cURL 7.22.0
`CURLAUTH_ANY` (int)
`CURLAUTH_ANYSAFE` (int)
`CURLAUTH_AWS_SIGV4` (int)
  Available as of PHP 8.2.0 and cURL 7.75.0.
`CURLOPT_PROXYAUTH` (int)
`CURLOPT_MAIL_RCPT_ALLLOWFAILS` (int)
  Available as of PHP 8.2.0 and cURL 7.69.0
`CURLOPT_UPKEEP_INTERVAL_MS` (int)
  Available as of PHP 8.2.0 and cURL 7.62.0
`CURLOPT_MAX_RECV_SPEED_LARGE` (int)
  Available as of cURL 7.15.5
`CURLOPT_MAX_SEND_SPEED_LARGE` (int)
  Available as of cURL 7.15.5
`CURLOPT_HEADEROPT` (int)
  Available as of PHP 7.0.7 and cURL 7.37.0
`CURLOPT_PROXYHEADER` (int)
  Available as of PHP 7.0.7 and cURL 7.37.0
`CURLINFO_PRIVATE` (int)
`CURLINFO_EFFECTIVE_URL` (int)
`CURLINFO_HTTP_CODE` (int)
  As of cURL 7.10.8, this is a legacy alias of `CURLINFO_RESPONSE_CODE`
`CURLINFO_PROXY_ERROR` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_BAD_ADDRESS_TYPE` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_BAD_VERSION` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_CLOSED` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_GSSAPI` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_GSSAPI_PERMSG` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_GSSAPI_PROTECTION` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_IDENTD_DIFFER` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_IDENTD` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_LONG_HOSTNAME` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_LONG_PASSWD` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_LONG_USER` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_NO_AUTH` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_OK` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_RECV_ADDRESS` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_RECV_AUTH` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_RECV_CONNECT` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_RECV_REQACK` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_REPLY_ADDRESS_TYPE_NOT_SUPPORTED` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_REPLY_COMMAND_NOT_SUPPORTED` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_REPLY_CONNECTION_REFUSED` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_REPLY_GENERAL_SERVER_FAILURE` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_REPLY_HOST_UNREACHABLE` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_REPLY_NETWORK_UNREACHABLE` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_REPLY_NOT_ALLOWED` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_REPLY_TTL_EXPIRED` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_REPLY_UNASSIGNED` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_REQUEST_FAILED` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_RESOLVE_HOST` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_SEND_AUTH` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_SEND_CONNECT` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_SEND_REQUEST` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_UNKNOWN_FAIL` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_UNKNOWN_MODE` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLPX_USER_REJECTED` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLINFO_REFERER` (int)
  Available as of PHP 8.2.0 and cURL 7.76.0
`CURLINFO_RESPONSE_CODE` (int)
  Available since cURL 7.10.8
`CURLINFO_RETRY_AFTER` (int)
  Available as of PHP 8.2.0 and cURL 7.66.0
`CURLINFO_HEADER_OUT` (int)
`CURLINFO_HEADER_SIZE` (int)
`CURLINFO_REQUEST_SIZE` (int)
`CURLINFO_TOTAL_TIME` (int)
`CURLINFO_NAMELOOKUP_TIME` (int)
`CURLINFO_CAINFO` (int)
  Available as of PHP 8.3.0 and cURL 7.84.0
`CURLINFO_CAPATH` (int)
  Available as of PHP 8.3.0 and cURL 7.84.0
`CURLINFO_CONNECT_TIME` (int)
`CURLINFO_PRETRANSFER_TIME` (int)
`CURLINFO_SIZE_UPLOAD` (int)
`CURLINFO_SIZE_DOWNLOAD` (int)
`CURLINFO_SPEED_DOWNLOAD` (int)
`CURLINFO_SPEED_UPLOAD` (int)
`CURLINFO_FILETIME` (int)
`CURLINFO_SSL_VERIFYRESULT` (int)
`CURLINFO_CONTENT_LENGTH_DOWNLOAD` (int)
`CURLINFO_CONTENT_LENGTH_UPLOAD` (int)
`CURLINFO_STARTTRANSFER_TIME` (int)
`CURLINFO_CONTENT_TYPE` (int)
`CURLINFO_REDIRECT_TIME` (int)
`CURLINFO_REDIRECT_COUNT` (int)
`CURLINFO_REDIRECT_URL` (int)
`CURLINFO_PRIMARY_IP` (int)
`CURLINFO_PRIMARY_PORT` (int)
`CURLINFO_LOCAL_IP` (int)
`CURLINFO_LOCAL_PORT` (int)
`CURL_PUSH_OK` (int)
  Available since PHP 7.1.0 and cURL 7.44.0
`CURL_PUSH_DENY` (int)
  Available since PHP 7.1.0 and cURL 7.44.0
`CURL_REDIR_POST_301` (int)
  Available since PHP 7.0.7 and cURL 7.18.2
`CURL_REDIR_POST_302` (int)
  Available since PHP 7.0.7 and cURL 7.18.2
`CURL_REDIR_POST_303` (int)
  Available since PHP 7.0.7 and cURL 7.25.1
`CURL_REDIR_POST_ALL` (int)
  Available since PHP 7.0.7 and cURL 7.18.2
`CURL_TIMECOND_NONE` (int)
`CURL_TIMECOND_IFMODSINCE` (int)
`CURL_TIMECOND_IFUNMODSINCE` (int)
`CURL_TIMECOND_LASTMOD` (int)
`CURL_VERSION_ALTSVC` (int)
  Available since PHP 7.3.6 and cURL 7.64.1
`CURL_VERSION_ASYNCHDNS` (int)
  Asynchronous DNS resolves. Available since PHP 7.3.0 and cURL 7.10.7
`CURL_VERSION_BROTLI` (int)
  Available since PHP 7.3.0 and cURL 7.57.0
`CURL_VERSION_CONV` (int)
  Character conversions supported. Available since PHP 7.3.0 and cURL 7.15.4
`CURL_VERSION_CURLDEBUG` (int)
  Debug memory tracking supported. Available since PHP 7.3.6 and cURL 7.19.6
`CURL_VERSION_DEBUG` (int)
  Built with debug capabilities. Available since PHP 7.3.0 and cURL 7.10.6
`CURL_VERSION_GSASL` (int)
  Available as of PHP 8.2.0 and cURL 7.76.0
`CURL_VERSION_GSSAPI` (int)
  Built against a GSS-API library. Available since PHP 7.3.0 and cURL 7.38.0
`CURL_VERSION_GSSNEGOTIATE` (int)
  Negotiate auth is supported. Available since PHP 7.3.0 and cURL 7.10.6 (deprecated since 7.38.0)
`CURL_VERSION_HSTS` (int)
  Available as of PHP 8.2.0 and cURL 7.74.0
`CURL_VERSION_IDN` (int)
  Internationized Domain Names are supported. Available since PHP 7.3.0 and cURL 7.12.0
`CURL_VERSION_MULTI_SSL` (int)
  Available since PHP 7.3.0 and cURL 7.56.0
`CURL_VERSION_NTLM` (int)
  NTLM auth is supported. Available since PHP 7.3.0 and cURL 7.10.6
`CURL_VERSION_NTLM_WB` (int)
  NTLM delegation to winbind helper is supported. Available since PHP 7.3.0 and cURL 7.22.0
`CURL_VERSION_IPV6` (int)
  IPv6-enabled.
`CURL_VERSION_KERBEROS4` (int)
  Kerberos V4 auth is supported.
`CURL_VERSION_KERBEROS5` (int)
  Kerberos V5 auth is supported. Available since PHP 7.0.7 and cURL 7.40.0
`CURL_VERSION_HTTP2` (int)
  HTTP2 support built-in. Available since cURL 7.33.0
`CURL_VERSION_HTTP3` (int)
  Available as of PHP 8.2.0 and cURL 7.66.0
`CURL_VERSION_LARGEFILE` (int)
  Supports files larger than 2GB. Available since cURL 7.33.0
`CURL_VERSION_PSL` (int)
  Mozilla's Public Suffix List, used for cookie domain verification. Available since PHP 7.3.6 and cURL 7.47.0
`CURL_VERSION_SPNEGO` (int)
  SPNEGO auth is supported. Available since PHP 7.3.0 and cURL 7.10.8
`CURL_VERSION_SSPI` (int)
  Built against Windows SSPI. Available since PHP 7.3.0 and cURL 7.13.2
`CURL_VERSION_SSL` (int)
  SSL options are present.
`CURL_VERSION_TLSAUTH_SRP` (int)
  TLS-SRP auth is supported. Available since PHP 7.3.0 and cURL 7.21.4
`CURL_VERSION_UNICODE` (int)
  Available as of PHP 8.2.0 and cURL 7.72.0
`CURL_VERSION_UNIX_SOCKETS` (int)
  Unix domain sockets support. Available since PHP 7.0.7 and cURL 7.40.0
`CURL_VERSION_ZSTD` (int)
  Available as of PHP 8.2.0 and cURL 7.72.0
`CURL_VERSION_LIBZ` (int)
  libz features are present.
`CURLVERSION_NOW` (int)
`CURLE_OK` (int)
`CURLE_UNSUPPORTED_PROTOCOL` (int)
`CURLE_FAILED_INIT` (int)
`CURLE_URL_MALFORMAT` (int)
`CURLE_URL_MALFORMAT_USER` (int)
`CURLE_COULDNT_RESOLVE_PROXY` (int)
`CURLE_COULDNT_RESOLVE_HOST` (int)
`CURLE_COULDNT_CONNECT` (int)
`CURLE_FTP_WEIRD_SERVER_REPLY` (int)
`CURLE_FTP_ACCESS_DENIED` (int)
`CURLE_FTP_USER_PASSWORD_INCORRECT` (int)
`CURLE_FTP_WEIRD_PASS_REPLY` (int)
`CURLE_FTP_WEIRD_USER_REPLY` (int)
`CURLE_FTP_WEIRD_PASV_REPLY` (int)
`CURLE_FTP_WEIRD_227_FORMAT` (int)
`CURLE_FTP_CANT_GET_HOST` (int)
`CURLE_FTP_CANT_RECONNECT` (int)
`CURLE_FTP_COULDNT_SET_BINARY` (int)
`CURLE_PARTIAL_FILE` (int)
`CURLE_PROXY` (int)
  Available as of PHP 8.2.0 and cURL 7.73.0
`CURLE_FTP_COULDNT_RETR_FILE` (int)
`CURLE_FTP_WRITE_ERROR` (int)
`CURLE_FTP_QUOTE_ERROR` (int)
`CURLE_HTTP_NOT_FOUND` (int)
`CURLE_WRITE_ERROR` (int)
`CURLE_MALFORMAT_USER` (int)
`CURLE_FTP_COULDNT_STOR_FILE` (int)
`CURLE_READ_ERROR` (int)
`CURLE_OUT_OF_MEMORY` (int)
`CURLE_OPERATION_TIMEOUTED` (int)
`CURLE_FTP_COULDNT_SET_ASCII` (int)
`CURLE_FTP_PORT_FAILED` (int)
`CURLE_FTP_COULDNT_USE_REST` (int)
`CURLE_FTP_COULDNT_GET_SIZE` (int)
`CURLE_HTTP_RANGE_ERROR` (int)
`CURLE_HTTP_POST_ERROR` (int)
`CURLE_SSL_CONNECT_ERROR` (int)
`CURLE_FTP_BAD_DOWNLOAD_RESUME` (int)
`CURLE_FILE_COULDNT_READ_FILE` (int)
`CURLE_LDAP_CANNOT_BIND` (int)
`CURLE_LDAP_SEARCH_FAILED` (int)
`CURLE_LIBRARY_NOT_FOUND` (int)
`CURLE_FUNCTION_NOT_FOUND` (int)
`CURLE_ABORTED_BY_CALLBACK` (int)
`CURLE_BAD_FUNCTION_ARGUMENT` (int)
`CURLE_BAD_CALLING_ORDER` (int)
`CURLE_HTTP_PORT_FAILED` (int)
`CURLE_BAD_PASSWORD_ENTERED` (int)
`CURLE_TOO_MANY_REDIRECTS` (int)
`CURLE_UNKNOWN_TELNET_OPTION` (int)
`CURLE_TELNET_OPTION_SYNTAX` (int)
`CURLE_OBSOLETE` (int)
`CURLE_SSL_PEER_CERTIFICATE` (int)
`CURLE_GOT_NOTHING` (int)
`CURLE_SSL_ENGINE_NOTFOUND` (int)
`CURLE_SSL_ENGINE_SETFAILED` (int)
`CURLE_SEND_ERROR` (int)
`CURLE_RECV_ERROR` (int)
`CURLE_SHARE_IN_USE` (int)
`CURLE_SSL_CERTPROBLEM` (int)
`CURLE_SSL_CIPHER` (int)
`CURLE_SSL_CACERT` (int)
`CURLE_BAD_CONTENT_ENCODING` (int)
`CURLE_LDAP_INVALID_URL` (int)
`CURLE_FILESIZE_EXCEEDED` (int)
`CURLE_FTP_SSL_FAILED` (int)
`CURLE_SSH` (int)
  Available since cURL 7.16.1.
`CURLFTPAUTH_DEFAULT` (int)
`CURLFTPAUTH_SSL` (int)
`CURLFTPAUTH_TLS` (int)
`CURLPROXY_HTTP` (int)
  Available since cURL 7.10.
`CURLPROXY_HTTP_1_0` (int)
  Available since PHP 7.0.7 and cURL 7.19.3
`CURLPROXY_SOCKS4` (int)
  Available since cURL 7.10.
`CURLPROXY_SOCKS5` (int)
  Available since cURL 7.10.
`CURL_NETRC_OPTIONAL` (int)
`CURL_NETRC_IGNORED` (int)
`CURL_NETRC_REQUIRED` (int)
`CURL_HTTP_VERSION_NONE` (int)
`CURL_HTTP_VERSION_1_0` (int)
`CURL_HTTP_VERSION_1_1` (int)
`CURL_HTTP_VERSION_2` (int)
  Available since PHP 7.0.7 and cURL 7.43.0
`CURL_HTTP_VERSION_2_0` (int)
  Available since cURL 7.33.0
`CURL_HTTP_VERSION_2TLS` (int)
  Available since PHP 7.0.7 and cURL 7.47.0
`CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE` (int)
  Available since PHP 7.0.7 and cURL 7.49.0
`CURLM_CALL_MULTI_PERFORM` (int)
`CURLM_OK` (int)
`CURLM_BAD_HANDLE` (int)
`CURLM_BAD_EASY_HANDLE` (int)
`CURLM_OUT_OF_MEMORY` (int)
`CURLM_INTERNAL_ERROR` (int)
`CURLMSG_DONE` (int)
`CURLOPT_KEYPASSWD` (int)
`CURLOPT_SSH_AUTH_TYPES` (int)
`CURLOPT_SSH_HOST_PUBLIC_KEY_MD5` (int)
`CURLOPT_SSH_HOST_PUBLIC_KEY_SHA256` (int)
  Available as of PHP 8.2.0 and cURL 7.80.0
`CURLOPT_SSH_HOSTKEYFUNCTION` (int)
  Available as of PHP 8.3.0 and cURL 7.84.0
`CURLOPT_SSH_PRIVATE_KEYFILE` (int)
`CURLOPT_SSH_PUBLIC_KEYFILE` (int)
`CURLOPT_SSL_OPTIONS` (int)
  Available since cURL 7.25.0
`CURLSSLOPT_ALLOW_BEAST` (int)
  Available since cURL 7.25.0
`CURLSSLOPT_NO_REVOKE` (int)
  Available since PHP 7.0.7 and cURL 7.44.0
`CURLSSLOPT_AUTO_CLIENT_CERT` (int)
  Available as of PHP 8.2.0 and cURL 7.77.0
`CURLSSLOPT_NATIVE_CA` (int)
  Available as of PHP 8.2.0 and cURL 7.71.0
`CURLSSLOPT_NO_PARTIALCHAIN` (int)
  Available as of PHP 8.2.0 and cURL 7.68.0
`CURLSSLOPT_REVOKE_BEST_EFFORT` (int)
  Available as of PHP 8.2.0 and cURL 7.70.0
`CURLOPT_USERNAME` (int)
  Available since cURL 7.19.1
`CURLOPT_SASL_AUTHZID` (int)
  Available as of PHP 8.2.0 and cURL 7.66.0
`CURLOPT_SASL_IR` (int)
  Available since PHP 7.0.7 and cURL 7.31.0
`CURLOPT_DNS_INTERFACE` (int)
  Available since PHP 7.0.7 and cURL 7.33.0
`CURLOPT_DNS_LOCAL_IP4` (int)
  Available since PHP 7.0.7 and cURL 7.33.0
`CURLOPT_DNS_LOCAL_IP6` (int)
  Available since PHP 7.0.7 and cURL 7.33.0
`CURLOPT_XOAUTH2_BEARER` (int)
  Available since PHP 7.0.7 and cURL 7.33.0
`CURLOPT_LOGIN_OPTIONS` (int)
  Available since PHP 7.0.7 and cURL 7.34.0
`CURLOPT_EXPECT_100_TIMEOUT_MS` (int)
  Available since PHP 7.0.7 and cURL 7.36.0
`CURLOPT_SSL_ENABLE_ALPN` (int)
  Available since PHP 7.0.7 and cURL 7.36.0
`CURLOPT_SSL_ENABLE_NPN` (int)
  Available since PHP 7.0.7 and cURL 7.36.0
`CURLOPT_PINNEDPUBLICKEY` (int)
  Available since PHP 7.0.7 and cURL 7.39.0
`CURLOPT_UNIX_SOCKET_PATH` (int)
  Available since PHP 7.0.7 and cURL 7.40.0
`CURLOPT_SSL_VERIFYSTATUS` (int)
  Available since PHP 7.0.7 and cURL 7.41.0
`CURLOPT_PATH_AS_IS` (int)
  Available since PHP 7.0.7 and cURL 7.42.0
`CURLOPT_SSL_FALSESTART` (int)
  Available since PHP 7.0.7 and cURL 7.42.0
`CURLOPT_PIPEWAIT` (int)
  Available since PHP 7.0.7 and cURL 7.43.0
`CURLOPT_PROTOCOLS_STR` (int)
  Available as of PHP 8.3.0 and cURL 7.85.0
`CURLOPT_PROXY_SERVICE_NAME` (int)
  Available since PHP 7.0.7 and cURL 7.43.0
`CURLOPT_SERVICE_NAME` (int)
  Available since PHP 7.0.7 and cURL 7.43.0
`CURLOPT_DEFAULT_PROTOCOL` (int)
  Available since PHP 7.0.7 and cURL 7.45.0
`CURLOPT_STREAM_WEIGHT` (int)
  Available since PHP 7.0.7 and cURL 7.46.0
`CURLOPT_TFTP_NO_OPTIONS` (int)
  Available since PHP 7.0.7 and cURL 7.48.0
`CURLOPT_CONNECT_TO` (int)
  Available since PHP 7.0.7 and cURL 7.49.0
`CURLOPT_TCP_FASTOPEN` (int)
  Available since PHP 7.0.7 and cURL 7.49.0
`CURLOPT_TCP_KEEPALIVE` (int)
  Available since cURL 7.25.0
`CURLOPT_TCP_KEEPIDLE` (int)
  Available since cURL 7.25.0
`CURLOPT_TCP_KEEPINTVL` (int)
  Available since cURL 7.25.0
`CURLMOPT_PIPELINING` (int)
  Available since cURL 7.16.0.
`CURLMOPT_MAXCONNECTS` (int)
  Available since cURL 7.16.3.
`CURLMOPT_MAX_CONCURRENT_STREAMS` (int)
  Available as of PHP 8.2.0 and cURL 7.67.0.
`CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE` (int)
  Available since PHP 7.0.7 and cURL 7.30.0
`CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE` (int)
  Available since PHP 7.0.7 and cURL 7.30.0
`CURLMOPT_MAX_HOST_CONNECTIONS` (int)
  Available since PHP 7.0.7 and cURL 7.30.0
`CURLMOPT_MAX_PIPELINE_LENGTH` (int)
  Available since PHP 7.0.7 and cURL 7.30.0
`CURLMOPT_MAX_TOTAL_CONNECTIONS` (int)
  Available since PHP 7.0.7 and cURL 7.30.0
`CURLMOPT_PUSHFUNCTION` (int)
  Available since PHP 7.1.0 and cURL 7.44.0
`CURLSSH_AUTH_AGENT` (int)
  Available since PHP 7.0.7 and cURL 7.28.0
`CURLSSH_AUTH_ANY` (int)
`CURLSSH_AUTH_DEFAULT` (int)
`CURLSSH_AUTH_HOST` (int)
`CURLSSH_AUTH_KEYBOARD` (int)
`CURLSSH_AUTH_NONE` (int)
`CURLSSH_AUTH_PASSWORD` (int)
`CURLSSH_AUTH_PUBLICKEY` (int)
`CURLPAUSE_ALL` (int)
  Available since cURL 7.18.0.
`CURLPAUSE_CONT` (int)
  Available since cURL 7.18.0.
`CURLPAUSE_RECV` (int)
  Available since cURL 7.18.0.
`CURLPAUSE_RECV_CONT` (int)
  Available since cURL 7.18.0.
`CURLPAUSE_SEND` (int)
  Available since cURL 7.18.0.
`CURLPAUSE_SEND_CONT` (int)
  Available since cURL 7.18.0.
`CURLPIPE_NOTHING` (int)
  Available since cURL 7.43.0.
`CURLPIPE_HTTP1` (int)
  Available since cURL 7.43.0.
`CURLPIPE_MULTIPLEX` (int)
  Available since cURL 7.43.0.
`CURLPROXY_SOCKS4A` (int)
  Available since cURL 7.18.0.
`CURLPROXY_SOCKS5_HOSTNAME` (int)
  Available since cURL 7.18.0.
`CURLHEADER_SEPARATE` (int)
  Available since PHP 7.0.7 and cURL 7.37.0.
`CURLHEADER_UNIFIED` (int)
  Available since PHP 7.0.7 and cURL 7.37.0.
`CURLPROTO_SMB` (int)
  Available since PHP 7.0.7 and cURL 7.40.0.
`CURLPROTO_SMBS` (int)
  Available since PHP 7.0.7 and cURL 7.40.0.
`CURLPROTO_MQTT` (int)
  Available as of PHP 8.2.0 and cURL 7.71.0.
`CURLOPT_REDIR_PROTOCOLS_STR` (int)
  Available as of PHP 8.3.0 and cURL 7.85.0.
`CURLOPT_REQUEST_TARGET` (int)
  Available since PHP 7.3.0 and cURL 7.55.0.
`CURLAUTH_GSSAPI` (int)
  Available since PHP 7.3.0 and cURL 7.54.1
`CURLE_WEIRD_SERVER_REPLY` (int)
  Available since PHP 7.3.0 and cURL 7.51.0
`CURLINFO_CONTENT_LENGTH_DOWNLOAD_T` (int)
  Available since PHP 7.3.0 and cURL 7.55.0
`CURLINFO_CONTENT_LENGTH_UPLOAD_T` (int)
  Available since PHP 7.3.0 and cURL 7.55.0
`CURLINFO_HTTP_VERSION` (int)
  Available since PHP 7.3.0 and cURL 7.50.0
`CURLINFO_PROTOCOL` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLINFO_PROXY_SSL_VERIFYRESULT` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLINFO_SCHEME` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLINFO_SIZE_DOWNLOAD_T` (int)
  Available since PHP 7.3.0 and cURL 7.50.0
`CURLINFO_SIZE_UPLOAD_T` (int)
  Available since PHP 7.3.0 and cURL 7.50.0
`CURLINFO_SPEED_DOWNLOAD_T` (int)
  Available since PHP 7.3.0 and cURL 7.50.0
`CURLINFO_SPEED_UPLOAD_T` (int)
  Available since PHP 7.3.0 and cURL 7.50.0
`CURL_MAX_READ_SIZE` (int)
  Available since PHP 7.3.0 and cURL 7.53.0
`CURLOPT_ABSTRACT_UNIX_SOCKET` (int)
  Available since PHP 7.3.0 and cURL 7.53.0
`CURLOPT_KEEP_SENDING_ON_ERROR` (int)
  Available since PHP 7.3.0 and cURL 7.51.0
`CURLOPT_PRE_PROXY` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_CAINFO` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_CAINFO_BLOB` (int)
  Available as of PHP 8.2.0 and cURL 7.77.0
`CURLOPT_PROXY_CAPATH` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_CRLFILE` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_KEYPASSWD` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_PINNEDPUBLICKEY` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_SSLCERT` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_SSLCERTTYPE` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_SSL_CIPHER_LIST` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_SSLKEY` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_SSLKEYTYPE` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_SSL_OPTIONS` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_SSL_VERIFYHOST` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_SSL_VERIFYPEER` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_SSLVERSION` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_TLSAUTH_PASSWORD` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_TLSAUTH_TYPE` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_PROXY_TLSAUTH_USERNAME` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLOPT_SOCKS5_AUTH` (int)
  Available since PHP 7.3.0 and cURL 7.55.0
`CURLOPT_SUPPRESS_CONNECT_HEADERS` (int)
  Available since PHP 7.3.0 and cURL 7.54.0
`CURLPROXY_HTTPS` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURL_SSLVERSION_MAX_DEFAULT` (int)
  Available since PHP 7.3.0 and cURL 7.54.0
`CURL_SSLVERSION_MAX_NONE` (int)
  Available since PHP 7.3.0 and cURL 7.54.0
`CURL_SSLVERSION_MAX_TLSv1_0` (int)
  Available since PHP 7.3.0 and cURL 7.54.0
`CURL_SSLVERSION_MAX_TLSv1_1` (int)
  Available since PHP 7.3.0 and cURL 7.54.0
`CURL_SSLVERSION_MAX_TLSv1_2` (int)
  Available since PHP 7.3.0 and cURL 7.54.0
`CURL_SSLVERSION_MAX_TLSv1_3` (int)
  Available since PHP 7.3.0 and cURL 7.54.0
`CURL_SSLVERSION_TLSv1_3` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURL_VERSION_HTTPS_PROXY` (int)
  Available since PHP 7.3.0 and cURL 7.52.0
`CURLAUTH_BEARER` (int)
  Available since PHP 7.3.0 and cURL 7.61.0.
`CURLINFO_APPCONNECT_TIME_T` (int)
  Available since PHP 7.3.0 and cURL 7.61.0
`CURLINFO_CONNECT_TIME_T` (int)
  Available since PHP 7.3.0 and cURL 7.61.0
`CURLINFO_FILETIME_T` (int)
  Available since PHP 7.3.0 and cURL 7.59.0
`CURLINFO_NAMELOOKUP_TIME_T` (int)
  Available since PHP 7.3.0 and cURL 7.61.0
`CURLINFO_PRETRANSFER_TIME_T` (int)
  Available since PHP 7.3.0 and cURL 7.61.0
`CURLINFO_REDIRECT_TIME_T` (int)
  Available since PHP 7.3.0 and cURL 7.61.0
`CURLINFO_STARTTRANSFER_TIME_T` (int)
  Available since PHP 7.3.0 and cURL 7.61.0
`CURLINFO_TOTAL_TIME_T` (int)
  Available since PHP 7.3.0 and cURL 7.61.0
`CURL_LOCK_DATA_CONNECT` (int)
  Available since PHP 7.3.0 and cURL 7.10.0
`CURL_LOCK_DATA_PSL` (int)
  Available since PHP 7.3.0 and cURL 7.61.0
`CURLOPT_DISALLOW_USERNAME_IN_URL` (int)
  Available since PHP 7.3.0 and cURL 7.61.0
`CURLOPT_DNS_SHUFFLE_ADDRESSES` (int)
  Available since PHP 7.3.0 and cURL 7.60.0
`CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS` (int)
  Available since PHP 7.3.0 and cURL 7.59.0
`CURLOPT_HAPROXYPROTOCOL` (int)
  Available since PHP 7.3.0 and cURL 7.60.0
`CURLOPT_PROXY_TLS13_CIPHERS` (int)
  Available since PHP 7.3.0 and cURL 7.61.0
`CURLOPT_SSH_COMPRESSION` (int)
  Available since PHP 7.3.0 and cURL 7.56.0
`CURLOPT_TIMEVALUE_LARGE` (int)
  Available since PHP 7.3.0 and cURL 7.59.0
`CURLOPT_TLS13_CIPHERS` (int)
  Available since PHP 7.3.0 and cURL 7.61.0
`CURLSSH_AUTH_GSSAPI` (int)
  Available since PHP 7.3.0 and cURL 7.58.0
`CURLOPT_HTTP09_ALLOWED` (int)
  Available since PHP 7.3.15 and 7.4.3, respectively, and cURL 7.64.0
`CURLMIMEOPT_FORMESCAPE` (int)
  Available as of PHP 8.3.0 and cURL 7.81.0
`CURLWS_RAW_MODE` (int)
  Available as of PHP 8.3.0 and cURL 7.86.0
`CURLKHMATCH_OK` (int)
  Available as of PHP 8.3.0 and cURL 7.19.6
`CURLKHMATCH_MISMATCH` (int)
  Available as of PHP 8.3.0 and cURL 7.19.6
`CURLKHMATCH_MISSING` (int)
  Available as of PHP 8.3.0 and cURL 7.19.6
`CURLKHMATCH_LAST` (int)
  Available as of PHP 8.3.0 and cURL 7.19.6