How to add multiple headers to file_get_content in PHP - php

Question

$opts = array('http' => array('method' => $_SERVER['REQUEST_METHOD'],
'header' => array("Accept-language: en\r\n",
"Cookie: " . session_name() . "=" . session_id() . "\r\n",
" Content-type: application/x-www-form-urlencoded\r\n"),
'content' => $_POST));
$postdata = http_build_query($_POST);
$context = stream_context_create($opts);
session_write_close(); // This is the key
echo $obsah = file_get_contents("http://localhost/journal/", false, $context);
This code is not working with POST and cookies.

Answer 1

The two existing answers are incorrect.
Newlines (\n) do not need to be added to HTTP headers used in stream_context_create(), and furthermore Carriage Returns (\r) should never be used anywhere near HTTP.
The following code is copied from the OP and corrected:
$postdata = http_build_query($_POST, '', '&', PHP_QUERY_RFC3986);
$opts = array(
'http' => array(
'method' => $_SERVER['REQUEST_METHOD'],
'header' => array(
"Accept-language: en",
"Cookie: " . session_name() . "=" . session_id(),
"Content-type: application/x-www-form-urlencoded",
),
'content' => $postdata,
)
);
$context = stream_context_create($opts);
$obsah = file_get_contents("http://localhost/journal/", false, $context);
echo $obsah
I've also added commas to the last array items so that maintenance will not have unnecessary lines in Git / SVN commits, and configured http_build_query() to use the more modern RFC 3986 encoding.

Answer 2

When passing a header with an array() instead of a string, you don't need the \r\n because PHP's stream_context_create() will do it for you on the header.
You also don't need session_write_close().

Answer 3

When you pass multiple headers there should two \r\n before sending POST data.
Let me explain.
Try this:
$opts = array(
'http' => array(
'method' => $_SERVER['REQUEST_METHOD'],
'header' => array(
"Accept-language: en\r\n",
"Cookie: ".session_name()."=".session_id()."\r\n",
"Content-type: application/x-www-form-urlencoded\r\n\r\n"
),
'content' => $_POST
)
);
$postdata = http_build_query($_POST);
$context = stream_context_create($opts);
session_write_close(); // this is the key
echo $obsah = file_get_contents("http://localhost/journal/", false, $context);