The gopher protocol, as defined by RFC 1436, is generally considered the ancestor of the modern HTTP protocol. However, gopher was also intended to provide references to non-gopher resources including telnet, wais, nntp, and even http. This extension adds gopher support to PHP's URL Wrappers, and provides a helper function gopher_parsedir() to make sense of gopher formatted directory listings.
Prerequisite: PHP 4.3.0 or higher.
安装此 PECL 扩展库的信息可在手册中标题为 PECL 扩展库安装的一章中找到。 更多信息如新版本，下载，源文件，维护者信息以及更新日志等可以在这里找到： http://pecl.php.netnet_gopher
本扩展模块在 php.ini 中未定义任何配置选项。
本扩展模块未定义任何资源类型。
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。
表 1. Net_Gopher constants
| Constant | Value | Description |
|---|---|---|
| GOPHER_DOCUMENT | 0 | Standard text/plain document. |
| GOPHER_DIRECTORY | 1 | A resource containing a gopher formatted directory listing. |
| GOPHER_BINHEX | 4 | A BinHex encoded binary file. |
| GOPHER_DOSBINARY | 5 | A DOS formatted binary archive. |
| GOPHER_UUENCODED | 6 | A UUEncoded file. |
| GOPHER_BINARY | 9 | A generic binary file. |
| GOPHER_INFO | 255 | An Informational entry |
| GOPHER_HTTP | 254 | A reference to an HTTP resource. |
| GOPHER_UNKNOWN | -1 | An unrecognized entry. |