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  <refentry id="function.stream-context-get-default">
   <refnamediv>
    <refname>stream_context_get_default</refname>
    <refpurpose>Retreive the default streams context</refpurpose> 
   </refnamediv>
   <refsect1>
    <title>Description</title>
     <methodsynopsis>
      <type>resource</type><methodname>stream_context_get_default</methodname>
      <methodparam choice="opt"><type>array</type><parameter>options</parameter></methodparam>
     </methodsynopsis>
    <simpara>
     Returns the default stream context which is used whenever file operations
     (<function>fopen</function>, <function>file_get_contents</function>, etc...)
     are called without a context parameter.  Options for the default context
     can optionally be specified with this function using the same syntax as
     <function>stream_context_create</function>.
    </simpara>
    <simpara>
     <parameter>options</parameter> must be an associative 
     array of associative arrays in the format 
     <literal>$arr['wrapper']['option'] = $value</literal>.
    </simpara>
    <example>
     <title>Using <function>stream_context_get_default</function></title>
     <programlisting role="php">
<![CDATA[
<?php
$default_opts = array(
  'http'=>array(
    'method'=>"GET",
    'header'=>"Accept-language: en\r\n" . 
              "Cookie: foo=bar",
    'proxy'=>"tcp://10.54.1.39:8000"
  )
);


$alternate_opts = array(
  'http'=>array(
    '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);

?>
]]>
     </programlisting>
    </example>
    <simpara>
     See also
     <function>stream_context_create</function>, and
     Listing of supported wrappers with context options (<xref linkend="wrappers"/>).
    </simpara>
   </refsect1>
  </refentry>

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