There are various inbuilt wrapper for a different type of URL- style protocols in PHP. These wrappers are used in many other file system functions. Registration of custom wrapper is also allowed in PHP. It can be done so through stream_wrapper_register() function.
In PHP the URL syntax supported is scheme://
The URL syntax not supported in PHP are:
- scheme:/
- scheme:
There are 12 wrapper in PHP.
| Wrapper | Work | Description |
|---|---|---|
| file:// | Local file system is accessed through it | This default wrapper in PHP is representing local file system. |
| http:// | HTTP(s) URLs is accessed through it | The mentioned relative path is applied against present working directory. |
| ftp:// | FTP(s) URLs is accessed through it | New files are created and earlier ones are accessed through FTP. If passive mode FTP is not supported by the server then there is a fail in connection. |
| php:// | Multiple type of I/O streams is accessed through it | I/O error file descriptors, streams, inmemory can be read and written through other I/O streams. |
| zlib:// | Streams are compressed | Works in a similar manner as gzopen(), except the fact that other file system functions can be used with it. |
| data:// | Data (RFC 2397) | Reading contents or media type which can be later printed. |
| glob:// | Finding pathnames such that it matches the pattern | The most common use includes searching over the directory and printing a file’s name and size. |
| phar:// | Archive in PHP | Read and write can be performed individually as well as simultaneously but cannot be appended. |
| ssh2:// | Shell 2 is secured | This wrapper is not available by default in PHP, for accessing it SSH2 extension needs to be downloaded. |
| rar:// | RAR | The URL path(encoded) is taken to RAR archive where RAR can be relative or absolute. Other optional things that are stored in archive are – asterik(*), number sign(#) and entry name. Both directories and files are accessible through it. |
| ogg:// | Audio stream | The ogg:// wrapper opens the file that are compressed audio that have been encoded through OGG/Vorbis codec. Even if the files are appended they are compressed audio. This wrapper is not available by default in PHP, for accessing it OGG/Vorbis extension needs to be downloaded. |
| expect:// | Interaction streams are processed | This wrapper makes stderr, process’es stdio and stdout accessible. This wrapper is not available by default in PHP, for accessing it Expect extension needs to be downloaded. |
