预定义常量

以下常量由本扩展模块定义，因此只有在本扩展模块被编译到 PHP 中，或者在运行时被动态加载后才有效。

Constants usable with http_support()

HTTP_SUPPORT (integer)

querying for this constant will always return TRUE

HTTP_SUPPORT_REQUESTS (integer)

whether support to issue HTTP requests is given, ie. libcurl support was compiled in

HTTP_SUPPORT_MAGICMIME (integer)

whether support to guess the Content-Type of HTTP messages is given, ie. libmagic support was compiled in

HTTP_SUPPORT_ENCODINGS (integer)

whether support for zlib encodings is given, ie. libz support was compiled in

HTTP_SUPPORT_SSLREQUESTS (integer)

whether support to issue HTTP requests over SSL is given, ie. linked libcurl was built with SSL support

Constants usable with http_parse_params()

HTTP_PARAMS_ALLOW_COMMA (integer)

allow commands additionally to semicolons as separator

HTTP_PARAMS_ALLOW_FAILURE (integer)

continue parsing after an error occurred

HTTP_PARAMS_RAISE_ERROR (integer)

raise PHP warnings on parse errors

HTTP_PARAMS_DEFAULT (integer)

all three values above, bitwise or'ed

Constants usable with http_parse_cookie() and its return value

HTTP_COOKIE_PARSE_RAW (integer)

don't urldecode values

HTTP_COOKIE_SECURE (integer)

whether "secure" was found in the cookie's parameters list

HTTP_COOKIE_HTTPONLY (integer)

whether "httpOnly" was found in the cookie's parameter list

Constants usable with http_deflate() and HttpDeflateStream

HTTP_DEFLATE_LEVEL_DEF (integer)

HTTP_DEFLATE_LEVEL_MIN (integer)

HTTP_DEFLATE_LEVEL_MAX (integer)

HTTP_DEFLATE_TYPE_ZLIB (integer)

HTTP_DEFLATE_TYPE_GZIP (integer)

HTTP_DEFLATE_TYPE_RAW (integer)

HTTP_DEFLATE_STRATEGY_DEF (integer)

HTTP_DEFLATE_STRATEGY_FILT (integer)

HTTP_DEFLATE_STRATEGY_HUFF (integer)

HTTP_DEFLATE_STRATEGY_RLE (integer)

HTTP_DEFLATE_STRATEGY_FIXED (integer)

Constants usable with HttpDeflateStream and HttpInflateStream

HTTP_ENCODING_STREAM_FLUSH_NONE (integer)

don't flush

HTTP_ENCODING_STREAM_FLUSH_SYNC (integer)

synchronized flush only

HTTP_ENCODING_STREAM_FLUSH_FULL (integer)

full data flush

Constants used for error reporting and Exceptions

HTTP_E_RUNTIME (integer)

runtime error

HTTP_E_INVALID_PARAM (integer)

an invalid parameter was passed

HTTP_E_HEADER (integer)

header() or similar operation failed

HTTP_E_MALFORMED_HEADERS (integer)

HTTP header parse error

HTTP_E_REQUEST_METHOD (integer)

unknown/invalid request method

HTTP_E_MESSAGE_TYPE (integer)

with operation incompatible message type

HTTP_E_ENCODING (integer)

encoding/decoding error

HTTP_E_REQUEST (integer)

request failure

HTTP_E_REQUEST_POOL (integer)

request pool failure

HTTP_E_SOCKET (integer)

socket exception

HTTP_E_RESPONSE (integer)

response failure

HTTP_E_URL (integer)

invalid URL

HTTP_E_QUERYSTRING (integer)

querystring operation failure

Constants usable with HttpMessage

HTTP_MSG_NONE (integer)

the message is of no specific type

HTTP_MSG_REQUEST (integer)

request style message

HTTP_MSG_RESPONSE (integer)

response style message

Constants usable with HttpQueryString

HTTP_QUERYSTRING_TYPE_BOOL (integer)

HTTP_QUERYSTRING_TYPE_INT (integer)

HTTP_QUERYSTRING_TYPE_FLOAT (integer)

HTTP_QUERYSTRING_TYPE_STRING (integer)

HTTP_QUERYSTRING_TYPE_ARRAY (integer)

HTTP_QUERYSTRING_TYPE_OBJECT (integer)

Constants used for the httpauthtype request option

HTTP_AUTH_BASIC (integer)

use "basic" authentication

HTTP_AUTH_DIGEST (integer)

use "digest" authentication

HTTP_AUTH_NTLM (integer)

use "NTLM" authentication

HTTP_AUTH_GSSNEG (integer)

use "GSS-NEGOTIATE" authentication

HTTP_AUTH_ANY (integer)

try any authentication scheme

Constants used for the HTTP protocol version request option

HTTP_VERSION_ANY (integer)

no specific HTTP protocol version

HTTP_VERSION_1_0 (integer)

HTTP version 1.0

HTTP_VERSION_1_1 (integer)

HTTP version 1.1

Constants used for the SSL protocol type and version request option

HTTP_SSL_VERSION_ANY (integer)

no specific SSL protocol version

HTTP_SSL_VERSION_TLSv1 (integer)

use TLSv1 only

HTTP_SSL_VERSION_SSLv3 (integer)

use SSLv3 only

HTTP_SSL_VERSION_SSLv2 (integer)

use SSLv2 only

Constants used for the proxytype request option

HTTP_PROXY_SOCKS4 (integer)

the proxy is a SOCKS4 type proxy

HTTP_PROXY_SOCKS5 (integer)

the proxy is a SOCKS5 type proxy

HTTP_PROXY_HTTP (integer)

standard HTTP proxy

Constants used for the ipresolve request option

HTTP_IPRESOLVE_V4 (integer)

use IPv4 only for name lookups

HTTP_IPRESOLVE_V6 (integer)

use IPv6 only for name lookups

HTTP_IPRESOLVE_ANY (integer)

use any IP mechanism only for name lookups

Predefined HTTP request method constants

HTTP_METH_GET (integer)

HTTP_METH_HEAD (integer)

HTTP_METH_POST (integer)

HTTP_METH_PUT (integer)

HTTP_METH_DELETE (integer)

HTTP_METH_OPTIONS (integer)

HTTP_METH_TRACE (integer)

HTTP_METH_CONNECT (integer)

HTTP_METH_PROPFIND (integer)

HTTP_METH_PROPPATCH (integer)

HTTP_METH_MKCOL (integer)

HTTP_METH_COPY (integer)

HTTP_METH_MOVE (integer)

HTTP_METH_LOCK (integer)

HTTP_METH_UNLOCK (integer)

HTTP_METH_VERSION_CONTROL (integer)

HTTP_METH_REPORT (integer)

HTTP_METH_CHECKOUT (integer)

HTTP_METH_CHECKIN (integer)

HTTP_METH_UNCHECKOUT (integer)

HTTP_METH_MKWORKSPACE (integer)

HTTP_METH_UPDATE (integer)

HTTP_METH_LABEL (integer)

HTTP_METH_MERGE (integer)

HTTP_METH_BASELINE_CONTROL (integer)

HTTP_METH_MKACTIVITY (integer)

HTTP_METH_ACL (integer)

Constants usable with http_redirect()

HTTP_REDIRECT (integer)

guess applicable redirect method

HTTP_REDIRECT_PERM (integer)

permanent redirect (301 Moved permanently)

HTTP_REDIRECT_FOUND (integer)

standard redirect (302 Found)

Note: RFC 1945 and RFC 2068 specify that the client is not allowed to change the method on the redirected request. However, most existing user agent implementations treat 302 as if it were a 303 response, performing a GET on the Location field-value regardless of the original request method. The status codes 303 and 307 have been added for servers that wish to make unambiguously clear which kind of reaction is expected of the client.

HTTP_REDIRECT_POST (integer)

redirect applicable to POST requests (303 See other)

HTTP_REDIRECT_PROXY (integer)

proxy redirect (305 Use proxy)

HTTP_REDIRECT_TEMP (integer)

temporary redirect (307 Temporary Redirect)

Constants usable with http_build_url()

HTTP_URL_REPLACE (integer)

replace every part of the first URL when there's one of the second URL

HTTP_URL_JOIN_PATH (integer)

join relative paths

HTTP_URL_JOIN_QUERY (integer)

join query strings

HTTP_URL_STRIP_USER (integer)

strip any user authentication information

HTTP_URL_STRIP_PASS (integer)

strip any password authentication information

HTTP_URL_STRIP_AUTH (integer)

strip any authentication information

HTTP_URL_STRIP_PORT (integer)

strip explicit port numbers

HTTP_URL_STRIP_PATH (integer)

strip complete path

HTTP_URL_STRIP_QUERY (integer)

strip query string

HTTP_URL_STRIP_FRAGMENT (integer)

strip any fragments (#identifier)

HTTP_URL_STRIP_ALL (integer)

strip anything but scheme and host