(PHP 5 >= 5.1.0, PHP 7, PHP 8)
stream_context_get_default — Retrieve the default stream context
Returns the default stream context which is used whenever file operations (fopen(), file_get_contents(), etc...) are called without a context parameter. Options for the default context can optionally be specified with this function using the same syntax as stream_context_create().
optionsoptions must be an associative
       array of associative arrays in the format
       $arr['wrapper']['option'] = $value, or null.
      
     A stream context resource.
| Version | Description | 
|---|---|
| 8.0.0 | optionsis now nullable. | 
Example #1 Using stream_context_get_default()
<?php
$default_opts = [
  'http' => [
    'method' => "GET",
    'header' => "Accept-language: en\r\n" .
                "Cookie: foo=bar",
    'proxy' =>  "tcp://10.54.1.39:8000",
  ]
];
$alternate_opts = [
  'http' => [
    'method'  => "POST",
    'header'  => "Content-type: application/x-www-form-urlencoded\r\n" .
                 "Content-length: " . strlen("baz=bomb"),
    'content' => "baz=bomb",
  ]
];
$default = stream_context_get_default($default_opts);
$alternate = stream_context_create($alternate_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');
/* Sends a POST request directly to www.example.com
 * Using context options specified in $alternate_opts
 */
readfile('http://www.example.com', false, $alternate);
?>
