stream_context_get_default

(PHP 5 >= 5.1.0, PHP 7, PHP 8)

stream_context_get_default — Retrieve the default stream context

Description

stream_context_get_default(?array $options = null): resource

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().

Parameters

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

Return Values

A stream context resource.

Changelog

VersionDescription
8.0.0options is now nullable.

Examples

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);

?>

See Also