预定义常量

下列常量由此扩展定义，且仅在此扩展编译入 PHP 或在运行时动态载入时可用。

curl_setopt()、curl_multi_setopt()、 curl_getinfo() 文档中常量的描述和使用。

CURLOPT_AUTOREFERER (integer): Available since PHP 5.1.0
CURLOPT_COOKIESESSION (integer): Available since PHP 5.1.0
CURLOPT_DNS_USE_GLOBAL_CACHE (integer)
CURLOPT_DNS_CACHE_TIMEOUT (integer)
CURLOPT_FTP_SSL (integer): Available since PHP 5.2.0
CURLFTP_CREATE_DIR (integer): Available since PHP 7.0.7 and cURL 7.19.3
CURLFTP_CREATE_DIR_NONE (integer): Available since PHP 7.0.7 and cURL 7.19.3
CURLFTP_CREATE_DIR_RETRY (integer): Available since PHP 7.0.7 and cURL 7.19.3
CURLFTPSSL_TRY (integer): Available since PHP 5.2.0
CURLFTPSSL_ALL (integer): Available since PHP 5.2.0
CURLFTPSSL_CONTROL (integer): Available since PHP 5.2.0
CURLFTPSSL_NONE (integer): Available since PHP 5.2.0
CURLOPT_PRIVATE (integer): Available since PHP 5.2.4
CURLOPT_FTPSSLAUTH (integer): Available since PHP 5.1.0
CURLOPT_PORT (integer)
CURLOPT_FILE (integer)
CURLOPT_INFILE (integer)
CURLOPT_INFILESIZE (integer)
CURLOPT_URL (integer)
CURLOPT_PROXY (integer)
CURLOPT_VERBOSE (integer)
CURLOPT_HEADER (integer)
CURLOPT_HTTPHEADER (integer)
CURLOPT_NOPROGRESS (integer)
CURLOPT_NOBODY (integer)
CURLOPT_FAILONERROR (integer)
CURLOPT_UPLOAD (integer)
CURLOPT_POST (integer)
CURLOPT_FTPLISTONLY (integer)
CURLOPT_FTPAPPEND (integer)
CURLOPT_FTP_CREATE_MISSING_DIRS (integer)
CURLOPT_NETRC (integer)
CURLOPT_FOLLOWLOCATION (integer): This constant is not available when open_basedir is enabled.
CURLOPT_FTPASCII (integer)
CURLOPT_PUT (integer)
CURLOPT_MUTE (integer)
CURLOPT_USERPWD (integer)
CURLOPT_PROXYUSERPWD (integer)
CURLOPT_RANGE (integer)
CURLOPT_TIMEOUT (integer)
CURLOPT_TIMEOUT_MS (integer)
CURLOPT_TCP_NODELAY (integer): Available since PHP 5.2.1
CURLOPT_POSTFIELDS (integer)
CURLOPT_PROGRESSFUNCTION (integer): Available since PHP 5.3.0
CURLOPT_REFERER (integer)
CURLOPT_USERAGENT (integer)
CURLOPT_FTPPORT (integer)
CURLOPT_FTP_USE_EPSV (integer)
CURLOPT_LOW_SPEED_LIMIT (integer)
CURLOPT_LOW_SPEED_TIME (integer)
CURLOPT_RESUME_FROM (integer)
CURLOPT_COOKIE (integer)
CURLOPT_COOKIELIST (integer): Available since PHP 5.5.0 and cURL 7.14.1
CURLOPT_SSLCERT (integer)
CURLOPT_SSLCERTPASSWD (integer)
CURLOPT_WRITEHEADER (integer)
CURLOPT_SSL_VERIFYHOST (integer)
CURLOPT_COOKIEFILE (integer)
CURLOPT_SSLVERSION (integer)
CURL_SSLVERSION_DEFAULT (integer)
CURL_SSLVERSION_TLSv1 (integer)
CURL_SSLVERSION_SSLv2 (integer)
CURL_SSLVERSION_SSLv3 (integer)
CURL_SSLVERSION_TLSv1_0 (integer): Available since PHP 5.5.19 and 5.6.3
CURL_SSLVERSION_TLSv1_1 (integer): Available since PHP 5.5.19 and 5.6.3
CURL_SSLVERSION_TLSv1_2 (integer): Available since PHP 5.5.19 and 5.6.3
CURLOPT_TIMECONDITION (integer)
CURLOPT_TIMEVALUE (integer)
CURLOPT_CUSTOMREQUEST (integer)
CURLOPT_STDERR (integer)
CURLOPT_TRANSFERTEXT (integer)
CURLOPT_RETURNTRANSFER (integer)
CURLOPT_QUOTE (integer)
CURLOPT_POSTQUOTE (integer)
CURLOPT_INTERFACE (integer)
CURLOPT_KRB4LEVEL (integer)
CURLOPT_HTTPPROXYTUNNEL (integer)
CURLOPT_FILETIME (integer)
CURLOPT_WRITEFUNCTION (integer)
CURLOPT_READFUNCTION (integer)
CURLOPT_PASSWDFUNCTION (integer)
CURLOPT_HEADERFUNCTION (integer)
CURLOPT_MAXREDIRS (integer)
CURLOPT_MAXCONNECTS (integer)
CURLOPT_CLOSEPOLICY (integer): Removed in PHP 5.6.0.
CURLOPT_FRESH_CONNECT (integer)
CURLOPT_FORBID_REUSE (integer)
CURLOPT_RANDOM_FILE (integer)
CURLOPT_EGDSOCKET (integer)
CURLOPT_CONNECTTIMEOUT (integer)
CURLOPT_CONNECTTIMEOUT_MS (integer)
CURLOPT_SSL_VERIFYPEER (integer)
CURLOPT_CAINFO (integer)
CURLOPT_CAPATH (integer)
CURLOPT_COOKIEJAR (integer)
CURLOPT_SSL_CIPHER_LIST (integer)
CURLOPT_BINARYTRANSFER (integer)
CURLOPT_NOSIGNAL (integer)
CURLOPT_PROXYTYPE (integer): Available as of cURL 7.10.
CURLOPT_BUFFERSIZE (integer)
CURLOPT_HTTPGET (integer)
CURLOPT_HTTP_VERSION (integer)
CURLOPT_SSLKEY (integer)
CURLOPT_SSLKEYTYPE (integer)
CURLOPT_SSLKEYPASSWD (integer)
CURLOPT_SSLENGINE (integer)
CURLOPT_SSLENGINE_DEFAULT (integer)
CURLOPT_SSLCERTTYPE (integer)
CURLOPT_CRLF (integer)
CURLOPT_ENCODING (integer)
CURLOPT_PROXYPORT (integer)
CURLOPT_UNRESTRICTED_AUTH (integer)
CURLOPT_FTP_USE_EPRT (integer)
CURLOPT_HTTP200ALIASES (integer)
CURLOPT_HTTPAUTH (integer)
CURLAUTH_BASIC (integer)
CURLAUTH_DIGEST (integer)
CURLAUTH_GSSNEGOTIATE (integer)
CURLAUTH_NEGOTIATE (integer): Available since PHP 7.0.7 and cURL 7.38.0.
CURLAUTH_NTLM (integer)
CURLAUTH_NTLM_WB (integer): Available since PHP 7.0.7 and cURL 7.22.0
CURLAUTH_ANY (integer)
CURLAUTH_ANYSAFE (integer)
CURLOPT_PROXYAUTH (integer)
CURLOPT_MAX_RECV_SPEED_LARGE (integer): Available since PHP 5.4.0 and cURL 7.15.5
CURLOPT_MAX_SEND_SPEED_LARGE (integer): Available since PHP 5.4.0 and cURL 7.15.5
CURLOPT_HEADEROPT (integer): Available since PHP 7.0.7 and cURL 7.37.0
CURLOPT_PROXYHEADER (integer): Available since PHP 7.0.7 and cURL 7.37.0
CURLCLOSEPOLICY_LEAST_RECENTLY_USED (integer): Removed in PHP 5.6.0.
CURLCLOSEPOLICY_LEAST_TRAFFIC (integer): Removed in PHP 5.6.0.
CURLCLOSEPOLICY_SLOWEST (integer): Removed in PHP 5.6.0.
CURLCLOSEPOLICY_CALLBACK (integer): Removed in PHP 5.6.0.
CURLCLOSEPOLICY_OLDEST (integer): Removed in PHP 5.6.0.
CURLINFO_PRIVATE (integer): Available since PHP 5.2.4
CURLINFO_EFFECTIVE_URL (integer)
CURLINFO_HTTP_CODE (integer): As of PHP 5.5.0 and cURL 7.10.8, this is a legacy alias of CURLINFO_RESPONSE_CODE
CURLINFO_RESPONSE_CODE (integer): Available since PHP 5.5.0 and cURL 7.10.8
CURLINFO_HEADER_OUT (integer): Available since PHP 5.1.3
CURLINFO_HEADER_SIZE (integer)
CURLINFO_REQUEST_SIZE (integer)
CURLINFO_TOTAL_TIME (integer)
CURLINFO_NAMELOOKUP_TIME (integer)
CURLINFO_CONNECT_TIME (integer)
CURLINFO_PRETRANSFER_TIME (integer)
CURLINFO_SIZE_UPLOAD (integer)
CURLINFO_SIZE_DOWNLOAD (integer)
CURLINFO_SPEED_DOWNLOAD (integer)
CURLINFO_SPEED_UPLOAD (integer)
CURLINFO_FILETIME (integer)
CURLINFO_SSL_VERIFYRESULT (integer)
CURLINFO_CONTENT_LENGTH_DOWNLOAD (integer)
CURLINFO_CONTENT_LENGTH_UPLOAD (integer)
CURLINFO_STARTTRANSFER_TIME (integer)
CURLINFO_CONTENT_TYPE (integer)
CURLINFO_REDIRECT_TIME (integer)
CURLINFO_REDIRECT_COUNT (integer)
CURLINFO_REDIRECT_URL (string): Available since PHP 5.3.7
CURLINFO_PRIMARY_IP (string): Available since PHP 5.4.7
CURLINFO_PRIMARY_PORT (integer): Available since PHP 5.4.7
CURLINFO_LOCAL_IP (string): Available since PHP 5.4.7
CURLINFO_LOCAL_PORT (integer): Available since PHP 5.4.7
CURL_PUSH_OK (integer): Available since PHP 7.1.0 and cURL 7.44.0
CURL_PUSH_DENY (integer): Available since PHP 7.1.0 and cURL 7.44.0
CURL_REDIR_POST_301 (integer): Available since PHP 7.0.7 and cURL 7.18.2
CURL_REDIR_POST_302 (integer): Available since PHP 7.0.7 and cURL 7.18.2
CURL_REDIR_POST_303 (integer): Available since PHP 7.0.7 and cURL 7.25.1
CURL_REDIR_POST_ALL (integer): Available since PHP 7.0.7 and cURL 7.18.2
CURL_TIMECOND_IFMODSINCE (integer)
CURL_TIMECOND_IFUNMODSINCE (integer)
CURL_TIMECOND_LASTMOD (integer)
CURL_VERSION_ALTSVC (integer): Available since PHP 7.3.6 and cURL 7.64.1
CURL_VERSION_ASYNCHDNS (integer): Available since PHP 7.3.0 and cURL 7.10.7
CURL_VERSION_BROTLI (integer): Available since PHP 7.3.0 and cURL 7.57.0
CURL_VERSION_CONV (integer): Available since PHP 7.3.0 and cURL 7.15.4
CURL_VERSION_CURLDEBUG (integer): Available since PHP 7.3.6 and cURL 7.19.6
CURL_VERSION_DEBUG (integer): Available since PHP 7.3.0 and cURL 7.10.6
CURL_VERSION_GSSAPI (integer): Available since PHP 7.3.0 and cURL 7.38.0
CURL_VERSION_GSSNEGOTIATE (integer): Available since PHP 7.3.0 and cURL 7.10.6 (deprecated since 7.38.0)
CURL_VERSION_IDN (integer): Available since PHP 7.3.0 and cURL 7.12.0
CURL_VERSION_MULTI_SSL (integer): Available since PHP 7.3.0 and cURL 7.56.0
CURL_VERSION_NTLM (integer): Available since PHP 7.3.0 and cURL 7.10.6
CURL_VERSION_NTLM_WB (integer): Available since PHP 7.3.0 and cURL 7.22.0
CURL_VERSION_IPV6 (integer)
CURL_VERSION_KERBEROS4 (integer)
CURL_VERSION_KERBEROS5 (integer): Available since PHP 7.0.7 and cURL 7.40.0
CURL_VERSION_HTTP2 (integer): Available since PHP 5.5.24 and 5.6.8 and cURL 7.33.0
CURL_VERSION_PSL (integer): Available since PHP 7.3.6 and cURL 7.47.0
CURL_VERSION_SPNEGO (integer): Available since PHP 7.3.0 and cURL 7.10.8
CURL_VERSION_SSPI (integer): Available since PHP 7.3.0 and cURL 7.13.2
CURL_VERSION_SSL (integer)
CURL_VERSION_TLSAUTH_SRP (integer): Available since PHP 7.3.0 and cURL 7.21.4
CURL_VERSION_UNIX_SOCKETS (integer): Available since PHP 7.0.7 and cURL 7.40.0
CURL_VERSION_LIBZ (integer)
CURLVERSION_NOW (integer)
CURLE_OK (integer)
CURLE_UNSUPPORTED_PROTOCOL (integer)
CURLE_FAILED_INIT (integer)
CURLE_URL_MALFORMAT (integer)
CURLE_URL_MALFORMAT_USER (integer)
CURLE_COULDNT_RESOLVE_PROXY (integer)
CURLE_COULDNT_RESOLVE_HOST (integer)
CURLE_COULDNT_CONNECT (integer)
CURLE_FTP_WEIRD_SERVER_REPLY (integer)
CURLE_FTP_ACCESS_DENIED (integer)
CURLE_FTP_USER_PASSWORD_INCORRECT (integer)
CURLE_FTP_WEIRD_PASS_REPLY (integer)
CURLE_FTP_WEIRD_USER_REPLY (integer)
CURLE_FTP_WEIRD_PASV_REPLY (integer)
CURLE_FTP_WEIRD_227_FORMAT (integer)
CURLE_FTP_CANT_GET_HOST (integer)
CURLE_FTP_CANT_RECONNECT (integer)
CURLE_FTP_COULDNT_SET_BINARY (integer)
CURLE_PARTIAL_FILE (integer)
CURLE_FTP_COULDNT_RETR_FILE (integer)
CURLE_FTP_WRITE_ERROR (integer)
CURLE_FTP_QUOTE_ERROR (integer)
CURLE_HTTP_NOT_FOUND (integer)
CURLE_WRITE_ERROR (integer)
CURLE_MALFORMAT_USER (integer)
CURLE_FTP_COULDNT_STOR_FILE (integer)
CURLE_READ_ERROR (integer)
CURLE_OUT_OF_MEMORY (integer)
CURLE_OPERATION_TIMEOUTED (integer)
CURLE_FTP_COULDNT_SET_ASCII (integer)
CURLE_FTP_PORT_FAILED (integer)
CURLE_FTP_COULDNT_USE_REST (integer)
CURLE_FTP_COULDNT_GET_SIZE (integer)
CURLE_HTTP_RANGE_ERROR (integer)
CURLE_HTTP_POST_ERROR (integer)
CURLE_SSL_CONNECT_ERROR (integer)
CURLE_FTP_BAD_DOWNLOAD_RESUME (integer)
CURLE_FILE_COULDNT_READ_FILE (integer)
CURLE_LDAP_CANNOT_BIND (integer)
CURLE_LDAP_SEARCH_FAILED (integer)
CURLE_LIBRARY_NOT_FOUND (integer)
CURLE_FUNCTION_NOT_FOUND (integer)
CURLE_ABORTED_BY_CALLBACK (integer)
CURLE_BAD_FUNCTION_ARGUMENT (integer)
CURLE_BAD_CALLING_ORDER (integer)
CURLE_HTTP_PORT_FAILED (integer)
CURLE_BAD_PASSWORD_ENTERED (integer)
CURLE_TOO_MANY_REDIRECTS (integer)
CURLE_UNKNOWN_TELNET_OPTION (integer)
CURLE_TELNET_OPTION_SYNTAX (integer)
CURLE_OBSOLETE (integer)
CURLE_SSL_PEER_CERTIFICATE (integer)
CURLE_GOT_NOTHING (integer)
CURLE_SSL_ENGINE_NOTFOUND (integer)
CURLE_SSL_ENGINE_SETFAILED (integer)
CURLE_SEND_ERROR (integer)
CURLE_RECV_ERROR (integer)
CURLE_SHARE_IN_USE (integer)
CURLE_SSL_CERTPROBLEM (integer)
CURLE_SSL_CIPHER (integer)
CURLE_SSL_CACERT (integer)
CURLE_BAD_CONTENT_ENCODING (integer)
CURLE_LDAP_INVALID_URL (integer)
CURLE_FILESIZE_EXCEEDED (integer)
CURLE_FTP_SSL_FAILED (integer)
CURLE_SSH (integer): Available since PHP 5.3.0 and cURL 7.16.1.
CURLFTPAUTH_DEFAULT (integer): Available since PHP 5.1.0
CURLFTPAUTH_SSL (integer): Available since PHP 5.1.0
CURLFTPAUTH_TLS (integer): Available since PHP 5.1.0
CURLPROXY_HTTP (integer): Available since cURL 7.10.
CURLPROXY_HTTP_1_0 (integer): Available since PHP 7.0.7 and cURL 7.19.3
CURLPROXY_SOCKS4 (integer): Available since PHP 5.2.10 and cURL 7.10.
CURLPROXY_SOCKS5 (integer): Available since cURL 7.10.
CURL_NETRC_OPTIONAL (integer)
CURL_NETRC_IGNORED (integer)
CURL_NETRC_REQUIRED (integer)
CURL_HTTP_VERSION_NONE (integer)
CURL_HTTP_VERSION_1_0 (integer)
CURL_HTTP_VERSION_1_1 (integer)
CURL_HTTP_VERSION_2 (integer): Available since PHP 7.0.7 and cURL 7.43.0
CURL_HTTP_VERSION_2_0 (integer): Available since PHP 5.5.24 and 5.6.8 and cURL 7.33.0
CURL_HTTP_VERSION_2TLS (integer): Available since PHP 7.0.7 and cURL 7.47.0
CURL_HTTP_VERSION_2_PRIOR_KNOWLEDGE (integer): Available since PHP 7.0.7 and cURL 7.49.0
CURLM_CALL_MULTI_PERFORM (integer)
CURLM_OK (integer)
CURLM_BAD_HANDLE (integer)
CURLM_BAD_EASY_HANDLE (integer)
CURLM_OUT_OF_MEMORY (integer)
CURLM_INTERNAL_ERROR (integer)
CURLMSG_DONE (integer)
CURLOPT_KEYPASSWD (integer)
CURLOPT_SSH_AUTH_TYPES (integer)
CURLOPT_SSH_HOST_PUBLIC_KEY_MD5 (integer)
CURLOPT_SSH_PRIVATE_KEYFILE (integer)
CURLOPT_SSH_PUBLIC_KEYFILE (integer)
CURLOPT_SSL_OPTIONS (integer): Available since PHP 5.5.0 and cURL 7.25.0
CURLSSLOPT_ALLOW_BEAST (integer): Available since PHP 5.5.0 and cURL 7.25.0
CURLSSLOPT_NO_REVOKE (integer): Available since PHP 7.0.7 and cURL 7.44.0
CURLOPT_USERNAME (integer): Available since PHP 5.5.0 and cURL 7.19.1
CURLOPT_SASL_IR (integer): Available since PHP 7.0.7 and cURL 7.31.0
CURLOPT_DNS_INTERFACE (integer): Available since PHP 7.0.7 and cURL 7.33.0
CURLOPT_DNS_LOCAL_IP4 (integer): Available since PHP 7.0.7 and cURL 7.33.0
CURLOPT_DNS_LOCAL_IP6 (integer): Available since PHP 7.0.7 and cURL 7.33.0
CURLOPT_XOAUTH2_BEARER (integer): Available since PHP 7.0.7 and cURL 7.33.0
CURLOPT_LOGIN_OPTIONS (integer): Available since PHP 7.0.7 and cURL 7.34.0
CURLOPT_EXPECT_100_TIMEOUT_MS (integer): Available since PHP 7.0.7 and cURL 7.36.0
CURLOPT_SSL_ENABLE_ALPN (integer): Available since PHP 7.0.7 and cURL 7.36.0
CURLOPT_SSL_ENABLE_NPN (integer): Available since PHP 7.0.7 and cURL 7.36.0
CURLOPT_PINNEDPUBLICKEY (integer): Available since PHP 7.0.7 and cURL 7.39.0
CURLOPT_UNIX_SOCKET_PATH (integer): Available since PHP 7.0.7 and cURL 7.40.0
CURLOPT_SSL_VERIFYSTATUS (integer): Available since PHP 7.0.7 and cURL 7.41.0
CURLOPT_PATH_AS_IS (integer): Available since PHP 7.0.7 and cURL 7.42.0
CURLOPT_SSL_FALSESTART (integer): Available since PHP 7.0.7 and cURL 7.42.0
CURLOPT_PIPEWAIT (integer): Available since PHP 7.0.7 and cURL 7.43.0
CURLOPT_PROXY_SERVICE_NAME (integer): Available since PHP 7.0.7 and cURL 7.43.0
CURLOPT_SERVICE_NAME (integer): Available since PHP 7.0.7 and cURL 7.43.0
CURLOPT_DEFAULT_PROTOCOL (integer): Available since PHP 7.0.7 and cURL 7.45.0
CURLOPT_STREAM_WEIGHT (integer): Available since PHP 7.0.7 and cURL 7.46.0
CURLOPT_TFTP_NO_OPTIONS (integer): Available since PHP 7.0.7 and cURL 7.48.0
CURLOPT_CONNECT_TO (integer): Available since PHP 7.0.7 and cURL 7.49.0
CURLOPT_TCP_FASTOPEN (integer): Available since PHP 7.0.7 and cURL 7.49.0
CURLOPT_TCP_KEEPALIVE (integer): Available since PHP 5.5.0 and cURL 7.25.0
CURLOPT_TCP_KEEPIDLE (integer): Available since PHP 5.5.0 and cURL 7.25.0
CURLOPT_TCP_KEEPINTVL (integer): Available since PHP 5.5.0 and cURL 7.25.0
CURLMOPT_PIPELINING (integer): Available since PHP 5.5.0 and cURL 7.16.0.
CURLMOPT_MAXCONNECTS (integer): Available since PHP 5.5.0 and cURL 7.16.3.
CURLMOPT_CHUNK_LENGTH_PENALTY_SIZE (integer): Available since PHP 7.0.7 and cURL 7.30.0
CURLMOPT_CONTENT_LENGTH_PENALTY_SIZE (integer): Available since PHP 7.0.7 and cURL 7.30.0
CURLMOPT_MAX_HOST_CONNECTIONS (integer): Available since PHP 7.0.7 and cURL 7.30.0
CURLMOPT_MAX_PIPELINE_LENGTH (integer): Available since PHP 7.0.7 and cURL 7.30.0
CURLMOPT_MAX_TOTAL_CONNECTIONS (integer): Available since PHP 7.0.7 and cURL 7.30.0
CURLMOPT_PUSHFUNCTION (integer): Available since PHP 7.1.0 and cURL 7.44.0
CURLSSH_AUTH_AGENT (integer): Available since PHP 7.0.7 and cURL 7.28.0
CURLSSH_AUTH_ANY (integer)
CURLSSH_AUTH_DEFAULT (integer)
CURLSSH_AUTH_HOST (integer)
CURLSSH_AUTH_KEYBOARD (integer)
CURLSSH_AUTH_NONE (integer)
CURLSSH_AUTH_PASSWORD (integer)
CURLSSH_AUTH_PUBLICKEY (integer)
CURL_WRAPPERS_ENABLED (integer): Defined if PHP was configured with --with-curlwrappers. Moved to PECL in PHP 5.5.0.
CURLPAUSE_ALL (integer): Available since PHP 5.5.0 and cURL 7.18.0.
CURLPAUSE_CONT (integer): Available since PHP 5.5.0 and cURL 7.18.0.
CURLPAUSE_RECV (integer): Available since PHP 5.5.0 and cURL 7.18.0.
CURLPAUSE_RECV_CONT (integer): Available since PHP 5.5.0 and cURL 7.18.0.
CURLPAUSE_SEND (integer): Available since PHP 5.5.0 and cURL 7.18.0.
CURLPAUSE_SEND_CONT (integer): Available since PHP 5.5.0 and cURL 7.18.0.
CURLPIPE_NOTHING (integer): Available since PHP 7.0.0 and cURL 7.43.0.
CURLPIPE_HTTP1 (integer): Available since PHP 7.0.0 and cURL 7.43.0.
CURLPIPE_MULTIPLEX (integer): Available since PHP 7.0.0 and cURL 7.43.0.
CURLPROXY_SOCKS4A (integer): Available since PHP 5.5.23 and PHP 5.6.7 and cURL 7.18.0.
CURLPROXY_SOCKS5_HOSTNAME (integer): Available since PHP 5.5.23 and PHP 5.6.7 and cURL 7.18.0.
CURLHEADER_SEPARATE (integer): Available since PHP 7.0.7 and cURL 7.37.0.
CURLHEADER_UNIFIED (integer): Available since PHP 7.0.7 and cURL 7.37.0.
CURLPROTO_SMB (integer): Available since PHP 7.0.7 and cURL 7.40.0.
CURLPROTO_SMBS (integer): Available since PHP 7.0.7 and cURL 7.40.0.
CURLOPT_REQUEST_TARGET (integer): Available since PHP 7.3.0 and cURL 7.55.0.
CURLAUTH_GSSAPI (integer): Available since PHP 7.3.0 and cURL 7.54.1
CURLE_WEIRD_SERVER_REPLY (integer): Available since PHP 7.3.0 and cURL 7.51.0
CURLINFO_CONTENT_LENGTH_DOWNLOAD_T (integer): Available since PHP 7.3.0 and cURL 7.55.0
CURLINFO_CONTENT_LENGTH_UPLOAD_T (integer): Available since PHP 7.3.0 and cURL 7.55.0
CURLINFO_HTTP_VERSION (integer): Available since PHP 7.3.0 and cURL 7.50.0
CURLINFO_PROTOCOL (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLINFO_PROXY_SSL_VERIFYRESULT (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLINFO_SCHEME (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLINFO_SIZE_DOWNLOAD_T (integer): Available since PHP 7.3.0 and cURL 7.50.0
CURLINFO_SIZE_UPLOAD_T (integer): Available since PHP 7.3.0 and cURL 7.50.0
CURLINFO_SPEED_DOWNLOAD_T (integer): Available since PHP 7.3.0 and cURL 7.50.0
CURLINFO_SPEED_UPLOAD_T (integer): Available since PHP 7.3.0 and cURL 7.50.0
CURL_MAX_READ_SIZE (integer): Available since PHP 7.3.0 and cURL 7.53.0
CURLOPT_ABSTRACT_UNIX_SOCKET (integer): Available since PHP 7.3.0 and cURL 7.53.0
CURLOPT_KEEP_SENDING_ON_ERROR (integer): Available since PHP 7.3.0 and cURL 7.51.0
CURLOPT_PRE_PROXY (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_CAINFO (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_CAPATH (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_CRLFILE (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_KEYPASSWD (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_PINNEDPUBLICKEY (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_SSLCERT (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_SSLCERTTYPE (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_SSL_CIPHER_LIST (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_SSLKEY (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_SSLKEYTYPE (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_SSL_OPTIONS (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_SSL_VERIFYHOST (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_SSL_VERIFYPEER (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_SSLVERSION (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_TLSAUTH_PASSWORD (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_TLSAUTH_TYPE (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_PROXY_TLSAUTH_USERNAME (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLOPT_SOCKS5_AUTH (integer): Available since PHP 7.3.0 and cURL 7.55.0
CURLOPT_SUPPRESS_CONNECT_HEADERS (integer): Available since PHP 7.3.0 and cURL 7.54.0
CURLPROXY_HTTPS (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURL_SSLVERSION_MAX_DEFAULT (integer): Available since PHP 7.3.0 and cURL 7.54.0
CURL_SSLVERSION_MAX_NONE (integer): Available since PHP 7.3.0 and cURL 7.54.0
CURL_SSLVERSION_MAX_TLSv1_0 (integer): Available since PHP 7.3.0 and cURL 7.54.0
CURL_SSLVERSION_MAX_TLSv1_1 (integer): Available since PHP 7.3.0 and cURL 7.54.0
CURL_SSLVERSION_MAX_TLSv1_2 (integer): Available since PHP 7.3.0 and cURL 7.54.0
CURL_SSLVERSION_MAX_TLSv1_3 (integer): Available since PHP 7.3.0 and cURL 7.54.0
CURL_SSLVERSION_TLSv1_3 (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURL_VERSION_HTTPS_PROXY (integer): Available since PHP 7.3.0 and cURL 7.52.0
CURLAUTH_BEARER (integer): Available since PHP 7.3.0 and cURL 7.61.0.
CURLINFO_APPCONNECT_TIME_T (integer): Available since PHP 7.3.0 and cURL 7.61.0
CURLINFO_CONNECT_TIME_T (integer): Available since PHP 7.3.0 and cURL 7.61.0
CURLINFO_FILETIME_T (integer): Available since PHP 7.3.0 and cURL 7.59.0
CURLINFO_NAMELOOKUP_TIME_T (integer): Available since PHP 7.3.0 and cURL 7.61.0
CURLINFO_PRETRANSFER_TIME_T (integer): Available since PHP 7.3.0 and cURL 7.61.0
CURLINFO_REDIRECT_TIME_T (integer): Available since PHP 7.3.0 and cURL 7.61.0
CURLINFO_STARTTRANSFER_TIME_T (integer): Available since PHP 7.3.0 and cURL 7.61.0
CURLINFO_TOTAL_TIME_T (integer): Available since PHP 7.3.0 and cURL 7.61.0
CURL_LOCK_DATA_CONNECT (integer): Available since PHP 7.3.0 and cURL 7.10.0
CURL_LOCK_DATA_PSL (integer): Available since PHP 7.3.0 and cURL 7.61.0
CURLOPT_DISALLOW_USERNAME_IN_URL (integer): Available since PHP 7.3.0 and cURL 7.61.0
CURLOPT_DNS_SHUFFLE_ADDRESSES (integer): Available since PHP 7.3.0 and cURL 7.60.0
CURLOPT_HAPPY_EYEBALLS_TIMEOUT_MS (integer): Available since PHP 7.3.0 and cURL 7.59.0
CURLOPT_HAPROXYPROTOCOL (integer): Available since PHP 7.3.0 and cURL 7.60.0
CURLOPT_PROXY_TLS13_CIPHERS (integer): Available since PHP 7.3.0 and cURL 7.61.0
CURLOPT_SSH_COMPRESSION (integer): Available since PHP 7.3.0 and cURL 7.56.0
CURLOPT_TIMEVALUE_LARGE (integer): Available since PHP 7.3.0 and cURL 7.59.0
CURLOPT_TLS13_CIPHERS (integer): Available since PHP 7.3.0 and cURL 7.61.0
CURLSSH_AUTH_GSSAPI (integer): Available since PHP 7.3.0 and cURL 7.58.0
CURLOPT_HTTP09_ALLOWED (integer): Available since PHP 7.3.15 and 7.4.3, respectively, and cURL 7.64.0

Php/docs/curl.constants

预定义常量