php內建支援的protocols / wrappers

參閱php官方手冊以取得詳細說明
http://www.php.net/manual/en/wrappers.php

包含以下功能

* Filesystem
* HTTP and HTTPS
* FTP and FTPS
* PHP input/output streams
* Compression Streams
* Data (RFC 2397)
* Glob
* Phar (phar://)
* Secure Shell 2 (This wrapper is not enabled by default)
* Rar (rar://)
* Audio Streams (ogg://)
* Process Interaction Streams (expect://command)