stream_context_set_default

(PHP 5 >= 5.3.0, PHP 7, PHP 8)

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.

注意:
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

示例 #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).

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User Contributed Notes 1 note

down

Mahmoud Saeed ¶

8 months ago


It's worth mentioning that passing an empty array will NOT reset default options.

<?php
stream_context_set_default(array()); // Does nothing.
?>

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备份地址：http://www.lvesu.com/blog/php/function.stream-context-set-default.php