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套接字上下文选项

套接字上下文选项套接字上下文选项列表

说明

套接字上下文选项可用于所有工作在套接字上的封装协议,像 tcp, httpftp.

可选项

bindto

用户PHP访问网络的指定的IP地址(IPv4或IPv6其中的一个)和/或 端口号,这个语法是 ip:port. Setting the IP or the port to 0 will let the system choose the IP and/or port.

Note:

As FTP creates two socket connections during normal operation, the port number cannot be specified using this option.

backlog

Used to limit the number of outstanding connections in the socket's listen queue.

Note:

This is only applicable to stream_socket_server() .

更新日志

版本 说明
5.1.0 Added bindto.
5.3.3 Added backlog.

范例

Example #1 Basic bindto usage example

<?php
// connect to the internet using the '192.168.0.100' IP
$opts  = array(
    
'socket'  => array(
        
'bindto'  =>  '192.168.0.100:0' ,
    ),
);


// connect to the internet using the '192.168.0.100' IP and port '7000'
$opts  = array(
    
'socket'  => array(
        
'bindto'  =>  '192.168.0.100:7000' ,
    ),
);


// connect to the internet using port '7000'
$opts  = array(
    
'socket'  => array(
        
'bindto'  =>  '0:7000' ,
    ),
);


// create the context...
$context  stream_context_create ( $opts );

// ...and use it to fetch the data
echo  file_get_contents ( 'http://www.example.com' false $context );

?>

用户评论:

[#1] guru at jnt-finland dot fi [2015-10-26 15:54:02]

You can set "bindto" to "0:0" to force use IPv4 instead of IPv6. And probably "[0]:0" to force use IPv6, thou this I couldn't test.

[#2] Anonymous [2015-07-31 18:19:45]

Well we can:
set a Context and just read a "file"...
open a socket an read/write to a "file"

no i have a selfsigned cert ( it is in /usr/ssl... ) but after upgrading to 5.6 some Errors came thru. 

no i have to downgrad php... so i'm now less secure to be "more" secure ...

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