Php/docs/function.stream-context-set-default

• PHP Manual
• Stream 函数
• Set the default stream context

stream_context_set_default

(PHP 5 >= 5.3.0, PHP 7)

stream_context_set_default — Set the default stream context

说明

stream_context_set_default ( array $options ) : resource

Set the default stream context which will be used whenever file operations (fopen(), file_get_contents(), etc...) are called without a context parameter. Uses the same syntax as stream_context_create().

参数

options

The options to set for the default context.

Note:

options must be an associative array of associative arrays in the format $arr['wrapper']['option'] = $value.

返回值

Returns the default stream context.

范例

Example #1 stream_context_set_default() example

<?php$default_opts = array(  'http'=>array(    'method'=>"GET",    'header'=>"Accept-language: en\r\n" .              "Cookie: foo=bar",    'proxy'=>"tcp://10.54.1.39:8000"  ));$default = stream_context_set_default($default_opts);/* Sends a regular GET request to proxy server at 10.54.1.39 * For www.example.com using context options specified in $default_opts */readfile('http://www.example.com');?>

参见

• stream_context_create() - 创建资源流上下文
• stream_context_get_default() - Retrieve the default stream context
• Listing of supported wrappers with context options (支持的协议和封装协议).