Stream 函数

stream_bucket_append — Append bucket to brigade
stream_bucket_make_writeable — Return a bucket object from the brigade for operating on
stream_bucket_new — Create a new bucket for use on the current stream
stream_bucket_prepend — Prepend bucket to brigade
stream_context_create — 创建资源流上下文
stream_context_get_default — Retrieve the default stream context
stream_context_get_options — 获取资源流/数据包/上下文的参数
stream_context_get_params — Retrieves parameters from a context
stream_context_set_default — Set the default stream context
stream_context_set_option — 对资源流、数据包或者上下文设置参数
stream_context_set_params — Set parameters for a stream/wrapper/context
stream_copy_to_stream — Copies data from one stream to another
stream_filter_append — Attach a filter to a stream
stream_filter_prepend — Attach a filter to a stream
stream_filter_register — Register a user defined stream filter
stream_filter_remove — 从资源流里移除某个过滤器
stream_get_contents — 读取资源流到一个字符串
stream_get_filters — 获取已注册的数据流过滤器列表
stream_get_line — 从资源流里读取一行直到给定的定界符
stream_get_meta_data — 从封装协议文件指针中取得报头／元数据
stream_get_transports — 获取已注册的套接字传输协议列表
stream_get_wrappers — 获取已注册的流类型
stream_is_local — Checks if a stream is a local stream
stream_isatty — Check if a stream is a TTY
stream_notification_callback — A callback function for the notification context parameter
stream_register_wrapper — 别名 stream_wrapper_register
stream_resolve_include_path — Resolve filename against the include path
stream_select — Runs the equivalent of the select() system call on the given arrays of streams with a timeout specified by tv_sec and tv_usec
stream_set_blocking — 为资源流设置阻塞或者阻塞模式
stream_set_chunk_size — 设置资源流区块大小
stream_set_read_buffer — Set read file buffering on the given stream
stream_set_timeout — Set timeout period on a stream
stream_set_write_buffer — Sets write file buffering on the given stream
stream_socket_accept — 接受由 stream_socket_server 创建的套接字连接
stream_socket_client — Open Internet or Unix domain socket connection
stream_socket_enable_crypto — Turns encryption on/off on an already connected socket
stream_socket_get_name — 获取本地或者远程的套接字名称
stream_socket_pair — 创建一对完全一样的网络套接字连接流
stream_socket_recvfrom — Receives data from a socket, connected or not
stream_socket_sendto — Sends a message to a socket, whether it is connected or not
stream_socket_server — Create an Internet or Unix domain server socket
stream_socket_shutdown — Shutdown a full-duplex connection
stream_supports_lock — Tells whether the stream supports locking
stream_wrapper_register — 注册一个用 PHP 类实现的 URL 封装协议
stream_wrapper_restore — Restores a previously unregistered built-in wrapper
stream_wrapper_unregister — Unregister a URL wrapper

User Contributed Notes

marcus at synchromedia dot co dot uk 15-Nov-2007 03:13


I can't find any real documentation on the quoted-printable-encode stream filter, but I've gathered info from several places. It seems there are 4 options that can be passed in the param array as in my other note on this subject:



line-length: integer, simply sets line length before a soft break is inserted

line-break-chars: Which char or chars to consider as a line break - note that "\r\n" will only match CRLF, not CR or LF, so make sure it matches your content.

binary: boolean, hex encodes all control chars, including spaces and line breaks, but leaves alphanumerics untouched

force-encode-first: Forcibly hex-encodes the first char on each line, even if it's alphanumeric. This is useful for avoiding corruption in some incompetent mail servers, like Exchange.

marcus at synchromedia dot co dot uk 30-Oct-2006 10:16


As this article says, there is no quoted_printable_encode function() in PHP: http://www.zend.com/manual/filters.convert.php



However there is a stream filter for quoted printable encoding. Here's an example function that produces output suitable for email and doesn't explicitly use external files (though it might do for strings over 2Mb due to the nature of the temp stream type):



<?php

function quoted_printable_encode($string) {

        $fp = fopen('php://temp/', 'r+');

        $params = array('line-length' => 70, 'line-break-chars' => "\r\n");

        stream_filter_append($fp, 'convert.quoted-printable-encode', STREAM_FILTER_READ, $params);

        fputs($fp, $string);

        rewind($fp);

        return stream_get_contents($fp);

}



echo quoted_printable_encode(str_repeat("hello there ", 50)." a=1\r\n")."\n";

?>



The filter needs to be restricted to STREAM_FILTER_READ because by default it will get filtered both going into and out of the stream, and will thus get encoded twice.



It should be much faster than using a PHP implementation of the same thing, though note that this will only work in PHP 5.1+.

Stream 函数

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User Contributed Notes