How to parse the header returned by cURL?

Question

I am trying to communicate to an API using cURL. One of the methods require that I pass the value of the ININ-ICWS-CSRF-Token header (ie. WAhtYWxoYXlla1dBY2NvUkRJWCQxZmUxZWFhZS0xZTE0LTQyNGYtYjdhZS0zNmZjN2MxYWJmODBYCjEwLjAuNC4xNjA=) and the Set-Cookie (ie. icws_904586002=bf7c7783-6766-4c4f-862b-48f25a9a3741) so I need to extract them so I can pass them later in my code.

Here is what I did to extract the header and the body from the cURL/API respond:

$respond = curl_exec($ch);

//throw cURL exception
if($respond === false){
    $errorNo = curl_errno($ch);
    $errorMessage = curl_error($ch);

    throw new ApiException($errorMessage, $errorNo);
}    

list($header, $body) = explode("\r\n\r\n", $respond, 2);
echo '<pre>';
print_r($header);
echo '</pre>';

This is the content of the $header value:

HTTP/1.1 201 Created
ININ-ICWS-CSRF-Token: WAhtYWxoYXlla1dBY2NvUkRJWCQxZmUxZWFhZS0xZTE0LTQyNGYtYjdhZS0zNmZjN2MxYWJmODBYCjEwLjAuNC4xNjA=
ININ-ICWS-Session-ID: 904586002
Set-Cookie: icws_904586002=bf7c7783-6766-4c4f-862b-48f25a9a3741; Path=/icws/904586002
Location: /icws/904586002/connection
Cache-Control: no-cache, no-store, must-revalidate
Pragma: no-cache
Expires: 0
Access-Control-Allow-Origin: *
Access-Control-Allow-Credentials: true
Content-Type: application/vnd.inin.icws+JSON; charset=utf-8
Date: Wed, 06 May 2015 17:13:44 GMT
Server: HttpPluginHost
Content-Length: 237

I would like to get in return results like this

the value of "ININ-ICWS-CSRF-Token" is "WAhtYWxoYXlla1dBY2NvUkRJWCQxZmUxZWFhZS0xZTE0LTQyNGYtYjdhZS0zNmZjN2MxYWJmODBYCjEwLjAuNC4xNjA="
the value of the "cookie" is "ININ-ICWS-CSRF-Token: WAhtYWxoYXlla1dBY2NvUkRJWCQxZmUxZWFhZS0xZTE0LTQyNGYtYjdhZS0zNmZjN2MxYWJmODBYCjEwLjAuNC4xNjA="

Answer 1

You can use the http_parse_headers function to parse the headers.

$hdr_array = http_parse_headers($header);

foreach ($hdr_array as $name => $value) {
    echo "The value of '$name' is '$value'<br>";
}

If you don't have http_parse_headers, you can use the code in Pedro Lobito's answer.

Answer 2

<?php

$myHeader = <<< LOL
HTTP/1.1 201 Created
ININ-ICWS-CSRF-Token: WAhtYWxoYXlla1dBY2NvUkRJWCQxZmUxZWFhZS0xZTE0LTQyNGYtYjdhZS0zNmZjN2MxYWJmODBYCjEwLjAuNC4xNjA=
ININ-ICWS-Session-ID: 904586002
Set-Cookie: icws_904586002=bf7c7783-6766-4c4f-862b-48f25a9a3741; Path=/icws/904586002
Location: /icws/904586002/connection
Cache-Control: no-cache, no-store, must-revalidate
Pragma: no-cache
Expires: 0
Access-Control-Allow-Origin: *
Access-Control-Allow-Credentials: true
Content-Type: application/vnd.inin.icws+JSON; charset=utf-8
Date: Wed, 06 May 2015 17:13:44 GMT
Server: HttpPluginHost
Content-Length: 237
LOL;

preg_match_all('/(.*?Token): (.*?)\s+/', $myHeader, $matches, PREG_PATTERN_ORDER);
$tokenName = $matches[1][0];
$token = $matches[2][0];

echo <<< LOL
the value of "$tokenName" is "$token"
the value of the "cookie" is "$tokenName: $token"
LOL;

?>