# 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。

SOAP constants
Constant | Value | Description
--- | --- | ---
`SOAP_1_1` (int) | 1 | Specifies use of SOAP 1.1 when passed as `soap_version` option to SoapServer::__construct() or SoapClient::__construct().
`SOAP_1_2` (int) | 2 | Specifies use of SOAP 1.2 when passed as `soap_version` option to SoapServer::__construct() or SoapClient::__construct().
`SOAP_PERSISTENCE_SESSION` (int) | 1 |
`SOAP_PERSISTENCE_REQUEST` (int) | 2 |
`SOAP_FUNCTIONS_ALL` (int) | 999 | Deprecated as of PHP 8.4.0.
`SOAP_ENCODED` (int) | 1 | Specifies use of SOAP Encoding when passed as `use` option to SoapClient::__construct().
`SOAP_LITERAL` (int) | 2 | Specifies use of service-specific encoding when passed as `use` option to SoapClient::__construct().
`SOAP_RPC` (int) | 1 | Specifies use of RPC-style binding when passed as `style` option to SoapClient::__construct().
`SOAP_DOCUMENT` (int) | 2 | Specifies use of document binding when passed as `style` option to SoapClient::__construct().
`SOAP_ACTOR_NEXT` (int) | 1 |
`SOAP_ACTOR_NONE` (int) | 2 |
`SOAP_ACTOR_UNLIMATERECEIVER` (int) | 3 |
`SOAP_COMPRESSION_ACCEPT` (int) | 32 | Specifies use of an "Accept-Encoding" header when passed as part of the `compression` option to SoapClient::__construct().
`SOAP_COMPRESSION_GZIP` (int) | 0 | Specifies use of gzip compression when passed as part of the `compression` option to SoapClient::__construct().
`SOAP_COMPRESSION_DEFLATE` (int) | 16 | Specifies use of deflate compression when passed as part of the `compression` option to SoapClient::__construct().
`SOAP_AUTHENTICATION_BASIC` (int) | 0 | Specifies use of HTTP Basic Authentication when passed as `authentication` option to SoapClient::__construct().
`SOAP_AUTHENTICATION_DIGEST` (int) | 1 | Specifies use of HTTP Digest Authentication when passed as `authentication` option to SoapClient::__construct().
`SOAP_SSL_METHOD_TLS` (int) | 0 | Used with the deprecated `ssl_method` option to SoapClient::__construct().
`SOAP_SSL_METHOD_SSLv2` (int) | 1 | Used with the deprecated `ssl_method` option to SoapClient::__construct().
`SOAP_SSL_METHOD_SSLv3` (int) | 2 | Used with the deprecated `ssl_method` option to SoapClient::__construct().
`SOAP_SSL_METHOD_SSLv23` (int) | 3 | Used with the deprecated `ssl_method` option to SoapClient::__construct().
`UNKNOWN_TYPE` (int) | 999998 |
`XSD_STRING` (int) | 101 |
`XSD_BOOLEAN` (int) | 102 |
`XSD_DECIMAL` (int) | 103 |
`XSD_FLOAT` (int) | 104 |
`XSD_DOUBLE` (int) | 105 |
`XSD_DURATION` (int) | 106 |
`XSD_DATETIME` (int) | 107 |
`XSD_TIME` (int) | 108 |
`XSD_DATE` (int) | 109 |
`XSD_GYEARMONTH` (int) | 110 |
`XSD_GYEAR` (int) | 111 |
`XSD_GMONTHDAY` (int) | 112 |
`XSD_GDAY` (int) | 113 |
`XSD_GMONTH` (int) | 114 |
`XSD_HEXBINARY` (int) | 115 |
`XSD_BASE64BINARY` (int) | 116 |
`XSD_ANYURI` (int) | 117 |
`XSD_QNAME` (int) | 118 |
`XSD_NOTATION` (int) | 119 |
`XSD_NORMALIZEDSTRING` (int) | 120 |
`XSD_TOKEN` (int) | 121 |
`XSD_LANGUAGE` (int) | 122 |
`XSD_NMTOKEN` (int) | 123 |
`XSD_NAME` (int) | 124 |
`XSD_NCNAME` (int) | 125 |
`XSD_ID` (int) | 126 |
`XSD_IDREF` (int) | 127 |
`XSD_IDREFS` (int) | 128 |
`XSD_ENTITY` (int) | 129 |
`XSD_ENTITIES` (int) | 130 |
`XSD_INTEGER` (int) | 131 |
`XSD_NONPOSITIVEINTEGER` (int) | 132 |
`XSD_NEGATIVEINTEGER` (int) | 133 |
`XSD_LONG` (int) | 134 |
`XSD_INT` (int) | 135 |
`XSD_SHORT` (int) | 136 |
`XSD_BYTE` (int) | 137 |
`XSD_NONNEGATIVEINTEGER` (int) | 138 |
`XSD_UNSIGNEDLONG` (int) | 139 |
`XSD_UNSIGNEDINT` (int) | 140 |
`XSD_UNSIGNEDSHORT` (int) | 141 |
`XSD_UNSIGNEDBYTE` (int) | 142 |
`XSD_POSITIVEINTEGER` (int) | 143 |
`XSD_NMTOKENS` (int) | 144 |
`XSD_ANYTYPE` (int) | 145 |
`XSD_ANYXML` (int) | 147 |
`APACHE_MAP` (int) | 200 |
`SOAP_ENC_OBJECT` (int) | 301 |
`SOAP_ENC_ARRAY` (int) | 300 |
`XSD_1999_TIMEINSTANT` (int) | 401 |
`XSD_NAMESPACE` (string) | http://www.w3.org/2001/XMLSchema |
`XSD_1999_NAMESPACE` (string) | http://www.w3.org/1999/XMLSchema |
`SOAP_SINGLE_ELEMENT_ARRAYS` (int) | 1 | Used with the `features` option to SoapClient::__construct().
`SOAP_WAIT_ONE_WAY_CALLS` (int) | 2 | Used with the `features` option to SoapClient::__construct().
`SOAP_USE_XSI_ARRAY_TYPE` (int) | 4 | Used with the `features` option to SoapClient::__construct().
`WSDL_CACHE_NONE` (int) | 0 | Disables the WSDL cache when used in the soap.wsdl_cache configuration option or the `wsdl_cache` option to SoapClient::__construct() and SoapServer::__construct().
`WSDL_CACHE_DISK` (int) | 1 | Specifies use of the on-disk WSDL cache only when used in the soap.wsdl_cache configuration option or the `wsdl_cache` option to SoapClient::__construct() and SoapServer::__construct().
`WSDL_CACHE_MEMORY` (int) | 2 | Specifies use of the in-memory WSDL cache only when used in the soap.wsdl_cache configuration option or the `wsdl_cache` option to SoapClient::__construct() and SoapServer::__construct().
`WSDL_CACHE_BOTH` (int) | 3 | Specifies use of both on-disk and in-memory WSDL caches when used in the soap.wsdl_cache configuration option or the `wsdl_cache` option to SoapClient::__construct() and SoapServer::__construct().

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