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http_parse_headers

(PECL pecl_http >= 0.10.0)

http_parse_headers — Parse HTTP headers

Beschreibung

array http_parse_headers ( string $header )

Parses HTTP headers into an associative array.

Parameter-Liste

header: string containing HTTP headers

Rückgabewerte

Returns an array on successIm Fehlerfall wird FALSE zurückgegeben..

Beispiele

Beispiel #1 Using http_parse_headers()


<?php
$headers = "content-type: text/html; charset=UTF-8\r\n".
  "Server: Funky/1.0\r\n".
  "Set-Cookie: foo=bar\r\n".
  "Set-Cookie: baz=quux\r\n".
  "Folded: works\r\n\ttoo\r\n";
print_r(http_parse_headers($headers));
?>

Das oben gezeigte Beispiel erzeugt folgende Ausgabe:

Array
(
  [Content-Type] => text/html; charset=UTF-8
  [Server] => Funky/1.0
  [Set-Cookie] => Array
  (
    [0] => foo=bar
    [1] => baz=quux
  )
  [Folded] => works
    too
)

Siehe auch

http_parse_message() - Parse HTTP messages
http_parse_cookie() - Parse HTTP cookie

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User Contributed Notes 7 notes

down

ricardovermeltfoort at gmail dot com ¶

11 years ago


I made a small mistake in http://www.php.net/manual/en/function.http-parse-headers.php#112986

The line
<?php
$headers[0] = trim($h[0]);trim($h[0]);
?>
Should be changed to:
<?php
$headers[0] = trim($h[0]);
?>

down

ricardovermeltfoort at gmail dot com ¶

11 years ago


Taken from http://www.php.net/manual/en/function.http-parse-headers.php#112917 and modified to: make folded work too, return status in first key.

<?php
if (!function_exists('http_parse_headers'))
{
    function http_parse_headers($raw_headers)
    {
        $headers = array();
        $key = ''; // [+]

        foreach(explode("\n", $raw_headers) as $i => $h)
        {
            $h = explode(':', $h, 2);

            if (isset($h[1]))
            {
                if (!isset($headers[$h[0]]))
                    $headers[$h[0]] = trim($h[1]);
                elseif (is_array($headers[$h[0]]))
                {
                    // $tmp = array_merge($headers[$h[0]], array(trim($h[1]))); // [-]
                    // $headers[$h[0]] = $tmp; // [-]
                    $headers[$h[0]] = array_merge($headers[$h[0]], array(trim($h[1]))); // [+]
                }
                else
                {
                    // $tmp = array_merge(array($headers[$h[0]]), array(trim($h[1]))); // [-]
                    // $headers[$h[0]] = $tmp; // [-]
                    $headers[$h[0]] = array_merge(array($headers[$h[0]]), array(trim($h[1]))); // [+]
                }

                $key = $h[0]; // [+]
            }
            else // [+]
            { // [+]
                if (substr($h[0], 0, 1) == "\t") // [+]
                    $headers[$key] .= "\r\n\t".trim($h[0]); // [+]
                elseif (!$key) // [+]
                    $headers[0] = trim($h[0]);trim($h[0]); // [+]
            } // [+]
        }

        return $headers;
    }
}
?>

Example:

<?php
$headers = "HTTP/1.1 200 OK\r\n".
    "content-type: text/html; charset=UTF-8\r\n".
    "Server: Funky/1.0\r\n".
    "Set-Cookie: foo=bar\r\n".
    "Set-Cookie: baz=quux\r\n".
    "Folded: works\r\n\ttoo\r\n";
print_r(http_parse_headers($headers));
?>

The above example will output:

Array
(
    [0] => HTTP/1.1 200 OK
    [content-type] => text/html; charset=UTF-8
    [Server] => Funky/1.0
    [Set-Cookie] => Array
        (
            [0] => foo=bar
            [1] => baz=quux
        )

    [Folded] => works
    too
)

down

Anonymous ¶

11 years ago


if (!function_exists('http_parse_headers')) {
    function http_parse_headers ($raw_headers) {
        $headers = array(); // $headers = [];
   
        foreach (explode("\n", $raw_headers) as $i => $h) {
            $h = explode(':', $h, 2);
            
            if (isset($h[1])) {
                if(!isset($headers[$h[0]])) {
                    $headers[$h[0]] = trim($h[1]);
                } else if(is_array($headers[$h[0]])) {
                    $tmp = array_merge($headers[$h[0]],array(trim($h[1])));
                    $headers[$h[0]] = $tmp;
                } else {
                    $tmp = array_merge(array($headers[$h[0]]),array(trim($h[1])));
                    $headers[$h[0]] = $tmp;
                }
            }
        }
        
        return $headers;
    }
}

down

g dot kuizinas at anuary dot com ¶

11 years ago


<?php

$headers = "HTTP/1.1 302 Found
Server: nginx
Date: Sat, 27 Apr 2013 08:07:57 GMT
Content-Type: text/html; charset=utf-8
Content-Length: 976
Connection: keep-alive
X-Frame-Options: sameorigin
X-Runtime: 443
Status: 302
Cache-Control: max-age=86400
Expires: Sun, 28 Apr 2013 08:07:56 GMT
Vary: Accept-Encoding,User-Agent
Strict-Transport-Security: max-age=3600 ; includeSubDomains";

if (!function_exists('http_parse_headers')) {
    function http_parse_headers ($raw_headers) {
        $headers = [];
    
        foreach (explode("\n", $raw_headers) as $i => $h) {
            $h = explode(':', $h, 2);
            
            if (isset($h[1])) {
                $headers[$h[0]] = trim($h[1]);
            }
        }
        
        return $headers;
    }
}

var_dump(http_parse_headers($headers));
?>

array(12) {
  ["Server"]=>
  string(5) "nginx"
  ["Date"]=>
  string(29) "Sat, 27 Apr 2013 08:07:57 GMT"
  ["Content-Type"]=>
  string(24) "text/html; charset=utf-8"
  ["Content-Length"]=>
  string(3) "976"
  ["Connection"]=>
  string(10) "keep-alive"
  ["X-Frame-Options"]=>
  string(10) "sameorigin"
  ["X-Runtime"]=>
  string(3) "443"
  ["Status"]=>
  string(3) "302"
  ["Cache-Control"]=>
  string(13) "max-age=86400"
  ["Expires"]=>
  string(29) "Sun, 28 Apr 2013 08:07:56 GMT"
  ["Vary"]=>
  string(26) "Accept-Encoding,User-Agent"
  ["Strict-Transport-Security"]=>
  string(32) "max-age=3600 ; includeSubDomains"
}

down

cttr dot web at gmail dot com ¶

8 years ago


Hi. Rewrote a function below comments
Github: https://github.com/mr-cttr/http_parse_headers

<?php
$headers = "content-type: text/html; charset=UTF-8\r\n".
    "Server: Nginx\r\n".
    "set-cookie: user=\r\n\tunknown\r\n".
    "set-cookie: pass=strong\r\n\tpassword\r\n".
    "Set-Cookie: id=1\r\n".
    "HOST:github.com";

http_parse_headers ($headers);

function http_parse_headers ($raw)
    {
        $k = '';
        $out = [];

        $exp = explode("\n", $raw);

        foreach ($exp as $v) {
            $exp = explode(':', $v, 2);

            if (isset($exp[1])) {
                /** Сonvert to 'Word-Word' */
                $k = strtolower($exp[0]);
                $k = preg_replace_callback('/\b[a-z]/', function ($m) { return strtoupper($m[0]); }, $k);

                $value = trim($exp[1]);

                if (!isset($out[$k])) $out[$k] = []; /** for in_array */
                if (!in_array($value, $out[$k])) $out[$k][] = $value; /** New element in array */
            } else {
                $value = trim($exp[0]);

                if (!empty($exp[0][0]) && $exp[0][0] == "\t") {
                    /** Index last element */
                    end($out[$k]);
                    $i = key($out[$k]);

                    $out[$k][$i] .= "\r\n\t". $value;
                } elseif (!$k)
                    $out[0] = $value;
            }
        }

        /** Array has only once element - convert in string */
        $out = array_map(function ($v) { return count($v) < 2 ? $v[0] : $v; }, $out);

        return $out;
    }
?>

Old function output with error

<?php
array (size=5)
  'content-type' => string 'text/html; charset=UTF-8' (length=24)
  'Server' => string 'Nginx' (length=5)
  'set-cookie' => string 'Array // Notice: Array to string conversion

    password' (length=16)
  'Set-Cookie' => string 'id=1' (length=4)
  'HOST' => string 'github.com' (length=10)
?>

My function output

<?php
array (size=4)
  'Content-Type' => string 'text/html; charset=UTF-8' (length=24)
  'Server' => string 'Nginx' (length=5)
  'Set-Cookie' => 
    array (size=3)
      0 => string 'user=

    unknown' (length=15)
      1 => string 'pass=strong

    password' (length=22)
      2 => string 'id=1' (length=4)
  'Host' => string 'github.com' (length=10)
?>

down

luigi dot sexpistols at gmail dot com ¶

18 years ago


If you don't have access to the PECL library, you can use this code to parse headers contained in strings.

Note that it's probably not as robust as the PECL version, as it only parses if the headers are separated by newlines (\n). This isn't a problem in most cases, though, as the standard suggests to use \r\n as the delimiter for headers.

HTTP response code is put into 'status'.

Any suggestions welcome!

<?
function http_parse_headers($headers=false){
    if($headers === false){
        return false;
        }
    $headers = str_replace("\r","",$headers);
    $headers = explode("\n",$headers);
    foreach($headers as $value){
        $header = explode(": ",$value);
        if($header[0] && !$header[1]){
            $headerdata['status'] = $header[0];
            }
        elseif($header[0] && $header[1]){
            $headerdata[$header[0]] = $header[1];
            }
        }
    return $headerdata;
    }

$headers = "HTTP/1.1 200 OK\r\n
Date: Tue, 08 Aug 2006 05:32:01 GMT\r\n
X-Powered-By: PHP/4.4.3-dev\r\n
Data 1: Value for Data 1\r\n
Data 2: Value for Data 2\r\n
Connection: close\r\n
Content-Type: text/html\r\n";

http_parse_headers($headers);

// OUTPUT:

array(7) {
  ["status"]=>
  string(15) "HTTP/1.1 200 OK"
  ["Date"]=>
  string(29) "Tue, 08 Aug 2006 05:32:01 GMT"
  ["X-Powered-By"]=>
  string(13) "PHP/4.4.3-dev"
  ["Data 1"]=>
  string(16) "Value for Data 1"
  ["Data 2"]=>
  string(16) "Value for Data 2"
  ["Connection"]=>
  string(5) "close"
  ["Content-Type"]=>
  string(9) "text/html"
}
?>

down

-1

Anonymous ¶

11 years ago


This one works even better:

<?php

    function http_parse_headers( $header )
    {
        $retVal = array();
        $fields = explode("\r\n", preg_replace('/\x0D\x0A[\x09\x20]+/', ' ', $header));
        foreach( $fields as $field ) {
            if( preg_match('/([^:]+): (.+)/m', $field, $match) ) {
                $match[1] = preg_replace('/(?<=^|[\x09\x20\x2D])./e', 'strtoupper("\0")', strtolower(trim($match[1])));
                if( isset($retVal[$match[1]]) ) {
                    if (!is_array($retVal[$match[1]])) {
                        $retVal[$match[1]] = array($retVal[$match[1]]);
                    }
                    $retVal[$match[1]][] = $match[2];
                } else {
                    $retVal[$match[1]] = trim($match[2]);
                }
            }
        }
        return $retVal;
    }

?>

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