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Last updated: Mon, 16 Jul 2012


(PHP 5)

stream_context_get_default -- Retreive the default streams context


resource stream_context_get_default ( [array options] )

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().

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

例子 1. Using stream_context_get_default()

= array(
'header'=>"Accept-language: en\r\n" .
"Cookie: foo=bar",

$alternate_opts = array(
'header'=>"Content-type: application/x-www-form-urlencoded\r\n" .
"Content-length: " . strlen("baz=bomb"),

$default = stream_context_get_default($default_opts);
$alternate = stream_context_create($alternate_opts);

/* Sends a regular GET request to proxy server at
 * For using context options specified in $default_opts

/* Sends a POST request directly to
 * Using context options specified in $alternate_opts
readfile('', false, $alternate);


See also stream_context_create(), and Listing of supported wrappers with context options (附录 L).

 Last updated: Mon, 16 Jul 2012
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