php stream 流封装协议

http://php.net/manual/wrappers.php

过程:

1. 开始通信

2. 读取数据

3. 写入数据

4. 结束通信

usage:

* 读写文件系统

<?php
$handle = fopen('file:///etc/hosts', 'rb');
while (feof($handle) !== true) {
    echo fgets($handle);
}
fclose($handle);

　　

##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting.  Do not change this entry.
##
127.0.0.1    localhost
255.255.255.255    broadcasthost
::1             localhost
127.0.0.1 bogon # added by Apache Friends XAMPP
192.168.10.10    homestead.test
192.168.10.10    homestead.app
192.168.10.127    mingzhanghui

/etc/hosts

* 通过HTTP、HTTPS、ssh与远程web服务器通信 

<?php
$json = file_get_contents(
    'https://www.hao123.com/api/tnwhilte?tn=93082360_s_hao_pg'
);

$a = json_decode($json, true);
var_dump($a);

array(4) {
   ["errno"]=> int(0)
   ["ft"]    =>  string(75) "UWYknj0krj6sn7qCmyqxTAThIjYkPHnznWm1rjTzP1DYFhnqpA7EnHc1Fh7W5HD4n1m4nj63Pjb"
   ["fake"]=>  int(1)
   ["tn"]  =>   string(15) "10018800_hao_pg"
}

* 打开并读写zip、rar、phar压缩文件