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stream_socket_client

stream_socket_client

(PHP 5)

stream_socket_clientOpen Internet or Unix domain socket connection

说明

resource stream_socket_client ( string $remote_socket [, int &$errno [, string &$errstr [, float $timeout = ini_get("default_socket_timeout") [, int $flags = STREAM_CLIENT_CONNECT [, resource $context ]]]]] )

Initiates a stream or datagram connection to the destination specified by remote_socket. The type of socket created is determined by the transport specified using standard URL formatting: transport://target. For Internet Domain sockets (AF_INET) such as TCP and UDP, the target portion of the remote_socket parameter should consist of a hostname or IP address followed by a colon and a port number. For Unix domain sockets, the target portion should point to the socket file on the filesystem.

Note:

The stream will by default be opened in blocking mode. You can switch it to non-blocking mode by using stream_set_blocking().

参数

remote_socket

Address to the socket to connect to.

errno

Will be set to the system level error number if connection fails.

errstr

Will be set to the system level error message if the connection fails.

timeout

Number of seconds until the connect() system call should timeout.

Note: This parameter only applies when not making asynchronous connection attempts.

Note:

To set a timeout for reading/writing data over the socket, use the stream_set_timeout(), as the timeout only applies while making connecting the socket.

flags

Bitmask field which may be set to any combination of connection flags. Currently the select of connection flags is limited to STREAM_CLIENT_CONNECT (default), STREAM_CLIENT_ASYNC_CONNECT and STREAM_CLIENT_PERSISTENT.

context

A valid context resource created with stream_context_create().

返回值

On success a stream resource is returned which may be used together with the other file functions (such as fgets(), fgetss(), fwrite(), fclose(), and feof()), FALSE on failure.

错误/异常

On failure the errno and errstr arguments will be populated with the actual system level error that occurred in the system-level connect() call. If the value returned in errno is 0 and the function returned FALSE, it is an indication that the error occurred before the connect() call. This is most likely due to a problem initializing the socket. Note that the errno and errstr arguments will always be passed by reference.

范例

Example #1 stream_socket_client() example

<?php
$fp 
stream_socket_client("tcp://www.example.com:80"$errno$errstr30);
if (!
$fp) {
    echo 
"$errstr ($errno)<br /> ";
} else {
    
fwrite($fp"GET / HTTP/1.0 Host: www.example.com Accept: *
stream_socket_enable_crypto($fptrueSTREAM_CRYPTO_METHOD_SSLv23_CLIENT);
fwrite($fp"USER god ");
fwrite($fp"PASS secret ");


stream_socket_enable_crypto($fpfalse);

while (
$motd fgets($fp)) {
    echo 
$motd;
}

fclose($fp);
?>

以上例程的输出类似于:

参见

  • OpenSSL 函数
  • 所支持的套接字传输器(Socket Transports)列表

  • set_socket_blocking
  • stream_bucket_append
  • stream_bucket_make_writeable
  • stream_bucket_new
  • stream_bucket_prepend
  • stream_context_create
  • stream_context_get_default
  • stream_context_get_options
  • stream_context_get_params
  • stream_context_set_default
  • stream_context_set_option
  • stream_context_set_params
  • stream_copy_to_stream
  • stream_encoding
  • stream_filter_append
  • stream_filter_prepend
  • stream_filter_register
  • stream_filter_remove
  • stream_get_contents
  • stream_get_filters
  • stream_get_line
  • stream_get_meta_data
  • stream_get_transports
  • stream_get_wrappers
  • stream_is_local
  • stream_notification_callback
  • stream_register_wrapper
  • stream_resolve_include_path
  • stream_select
  • stream_set_blocking
  • stream_set_read_buffer
  • stream_set_timeout
  • stream_set_write_buffer
  • stream_socket_accept
  • stream_socket_client
  • stream_socket_enable_crypto
  • stream_socket_get_name
  • stream_socket_pair
  • stream_socket_recvfrom
  • stream_socket_sendto
  • stream_socket_server
  • stream_socket_shutdown
  • stream_supports_lock
  • stream_wrapper_restore
  • stream_wrapper_unregister
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