Php/docs/class.streamwrapper

• PHP Manual
• Streams
• The streamWrapper class

(PHP 4 >= 4.3.2, PHP 5, PHP 7)

简介

Allows you to implement your own protocol handlers and streams for use with all the other filesystem functions (such as fopen(), fread() etc.).

Note:

This is NOT a real class, only a prototype of how a class defining its own protocol should be.

Note:

Implementing the methods in other ways than described here can lead to undefined behaviour.

An instance of this class is initialized as soon as a stream function tries to access the protocol it is associated with.

类摘要

streamWrapper {

/* 属性 */

public resource $context

/* 方法 */

__construct ( )

__destruct ( )

public dir_closedir ( ) : bool

public dir_opendir ( string $path , int $options ) : bool

public dir_readdir ( ) : string

public dir_rewinddir ( ) : bool

public mkdir ( string $path , int $mode , int $options ) : bool

public rename ( string $path_from , string $path_to ) : bool

public rmdir ( string $path , int $options ) : bool

public stream_cast ( int $cast_as ) : resource

public stream_close ( ) : void

public stream_eof ( ) : bool

public stream_flush ( ) : bool

public stream_lock ( int $operation ) : bool

public stream_metadata ( string $path , int $option , mixed $value ) : bool

public stream_open ( string $path , string $mode , int $options , string &$opened_path ) : bool

public stream_read ( int $count ) : string

public stream_seek ( int $offset , int $whence = SEEK_SET ) : bool

public stream_set_option ( int $option , int $arg1 , int $arg2 ) : bool

public stream_stat ( ) : array

public stream_tell ( ) : int

public stream_truncate ( int $new_size ) : bool

public stream_write ( string $data ) : int

public unlink ( string $path ) : bool

public url_stat ( string $path , int $flags ) : array

}

属性

resource context

The current context, or null if no context was passed to the caller function.

Use the stream_context_get_options() to parse the context.

Note:

This property must be public so PHP can populate it with the actual context resource.

参见

• Example class registered as stream wrapper
• stream_wrapper_register()
• stream_wrapper_unregister()
• stream_wrapper_restore()

Table of Contents

• streamWrapper::__construct — Constructs a new stream wrapper
• streamWrapper::__destruct — Destructs an existing stream wrapper
• streamWrapper::dir_closedir — Close directory handle
• streamWrapper::dir_opendir — Open directory handle
• streamWrapper::dir_readdir — Read entry from directory handle
• streamWrapper::dir_rewinddir — Rewind directory handle
• streamWrapper::mkdir — Create a directory
• streamWrapper::rename — Renames a file or directory
• streamWrapper::rmdir — Removes a directory
• streamWrapper::stream_cast — Retrieve the underlaying resource
• streamWrapper::stream_close — Close a resource
• streamWrapper::stream_eof — Tests for end-of-file on a file pointer
• streamWrapper::stream_flush — Flushes the output
• streamWrapper::stream_lock — Advisory file locking
• streamWrapper::stream_metadata — Change stream metadata
• streamWrapper::stream_open — Opens file or URL
• streamWrapper::stream_read — Read from stream
• streamWrapper::stream_seek — Seeks to specific location in a stream
• streamWrapper::stream_set_option — Change stream options
• streamWrapper::stream_stat — Retrieve information about a file resource
• streamWrapper::stream_tell — Retrieve the current position of a stream
• streamWrapper::stream_truncate — Truncate stream
• streamWrapper::stream_write — Write to stream
• streamWrapper::unlink — Delete a file
• streamWrapper::url_stat — Retrieve information about a file