apache_note
To callum85 at notspam dot msn dot com:
All of the request headers, including If-None-Match and If-Modified-Since should be available in the $_SERVER array by default. Try running this code:
<?php
var_dump($_SERVER);
?>
Experiment by sending different headers in the request to that script and you should see that the headers populate the $_SERVER array automatically.
apache_request_headers
(PHP 4 >= 4.3.0, PHP 5)
apache_request_headers — HTTPリクエストヘッダを全て取得する
説明
array apache_request_headers
( void
)
カレントのリクエストにおける全てのHTTPヘッダを取得します。
この関数は、 PHP が apache モジュールとしてインストールされた場合のみサポートされます。
返り値
カレントのリクエストにおける全てのHTTPヘッダの連想配列、もしくは 失敗時は FALSE を返します。
例
例1 apache_request_headers() の例
<?php
$headers = apache_request_headers();
foreach ($headers as $header => $value) {
echo "$header: $value <br />\n";
}
?>
上の例の出力は、たとえば 以下のようになります。
Accept: */* Accept-Language: en-us Accept-Encoding: gzip, deflate User-Agent: Mozilla/4.0 Host: www.example.com Connection: Keep-Alive
注意
注意: PHP 4.3.0より前では、apache_request_headers()は、 getallheaders()と呼ばれていました。PHP 4.3.0以 降、getallheaders()は、 apache_request_headers()へのエイリアスとなって います。
注意: 環境変数を読み込むことにより、共通のCGI変数の値を取得することも可 能です。これは、PHPがApacheモジュール として使用されているかどうかにはよらず動作します。 利用可能な環境変数 の一覧を見るには、phpinfo()を使用してください。
注意: PHP 4.3.3 以降、 Netscape/iPlanet/SunONE Web サーバの NSAPI サーバモジュール でもこの関数を使用できます。
add a note
User Contributed Notesapache_request_headers
tehjosh at gamingg dot net
29-Jul-2007 07:16
29-Jul-2007 07:16
callum85 at notspam dot msn dot com
18-Apr-2007 11:07
18-Apr-2007 11:07
There is a simple way to get request headers from Apache even on PHP running as a CGI. As far as I know, it's the only way to get the headers "If-Modified-Since" and "If-None-Match" when apache_request_headers() isn't available. You need mod_rewrite, which most web hosts seem to have enabled. Put this in an .htacess file in your web root:
RewriteEngine on
RewriteRule .* - [E=HTTP_IF_MODIFIED_SINCE:%{HTTP:If-Modified-Since}]
RewriteRule .* - [E=HTTP_IF_NONE_MATCH:%{HTTP:If-None-Match}]
The headers are then available in PHP as
<?php
$_SERVER['HTTP_IF_MODIFIED_SINCE'];
$_SERVER['HTTP_IF_NONE_MATCH'];
?>
I've tested this on PHP/5.1.6, on both Apache/2.2.3/Win32 and Apache/2.0.54/Unix, and it works perfectly.
Note: if you use RewriteRules already for clean URLs, you need to put the above rules AFTER your existing ones.
tehjosh at gamingg dot net
18-Mar-2007 09:03
18-Mar-2007 09:03
I wrote a function similar to jrabbit's, except that mine creates a custom function rather than redefining the original.
<?php
function request_headers()
{
if(function_exists("apache_request_headers")) // If apache_request_headers() exists...
{
if($headers = apache_request_headers()) // And works...
{
return $headers; // Use it
}
}
$headers = array();
foreach(array_keys($_SERVER) as $skey)
{
if(substr($skey, 0, 5) == "HTTP_")
{
$headername = str_replace(" ", "-", ucwords(strtolower(str_replace("_", " ", substr($skey, 0, 5)))));
$headers[$headername] = $_SERVER[$skey];
}
}
return $headers;
}
?>
Also, eval() is not necessary to define a function that is within an if block, as is done in jrabbit's code, because PHP will only read the function if it passes the if condition.
suso at suso dot org
17-Feb-2007 08:01
17-Feb-2007 08:01
The PHP developers should not be creating functions like this that only work in the module version and not in the CGI version. It creates situations where people who have setup special installations of PHP (like suphp) run into issues with prewritten software. If you can't make it work with both, then don't make it work at all.
jrabbit
21-Jan-2007 05:04
21-Jan-2007 05:04
The following code will implement an approximation of apache_request_headers for lighttpd making most scripts that use the function portable between the two platforms.
Caveats are:
1. This function will convert any _ in a header key to a -
2. This function will capitalize the first character and first character after each hyphen in each header key and lower case the rest of the key.
This does not cause a problem with standard headers which are capitalized in this manner but may cause custom headers to appear in a different case to apache.
if (!function_exists('apache_request_headers')) {
eval('
function apache_request_headers() {
foreach($_SERVER as $key=>$value) {
if (substr($key,0,5)=="HTTP_") {
$key=str_replace(" ","-",ucwords(strtolower(str_replace("_"," ",substr($key,5)))));
$out[$key]=$value;
}
}
return $out;
}
');
}
limalopex.eisfux.de
29-Oct-2006 09:01
29-Oct-2006 09:01
I didn't found a replacement for apache_request_headers() in PHP::Compat (http://pear.php.net/package/PHP_Compat) so I wrote my own:
<?php
if( !function_exists('apache_request_headers') ) {
///
function apache_request_headers() {
$arh = array();
$rx_http = '/\AHTTP_/';
foreach($_SERVER as $key => $val) {
if( preg_match($rx_http, $key) ) {
$arh_key = preg_replace($rx_http, '', $key);
$rx_matches = array();
// do some nasty string manipulations to restore the original letter case
// this should work in most cases
$rx_matches = explode('_', $arh_key);
if( count($rx_matches) > 0 and strlen($arh_key) > 2 ) {
foreach($rx_matches as $ak_key => $ak_val) $rx_matches[$ak_key] = ucfirst($ak_val);
$arh_key = implode('-', $rx_matches);
}
$arh[$arh_key] = $val;
}
}
return( $arh );
}
///
}
///
?>
php [at] barryhunter [.] co [.] uk
09-Sep-2005 04:00
09-Sep-2005 04:00
Surly this could be rewritten as
function list_dirs($path, $target)
{
$list = scandir($path);
$url = $_SERVER['HTTP_HOST'];
foreach ($list as $number => $filename)
{
if ( $filename !== '.' && $filename !== '..' && !is_file($filename) )
{
if ($target == '')
{
// Print Dirs with link
print ("<a href=\"http://$url/$filename\">$filename</a> <br>\n");
}
else
{
// Print Dirs with link
print ("<a href=\"http://$url/$filename\" target=\"$target\">$filename</a> <br>\n");
}
}
}
}
which would then not require apache. I havent tested this but looks to do exactly the same.
renich at woralelandia dot com
21-Apr-2005 10:50
21-Apr-2005 10:50
Here is a simple listing function. It accepts a path and target. Examples listed bellow
function list_dirs($path, $target)
{
$list = scandir($path);
foreach ($list as $number => $filename)
{
if ( $filename !== '.' && $filename !== '..' && !is_file($filename) )
{
// Asign more readable and logic variables
$dir = $filename;
$url = apache_request_headers();
if ($target == '')
{
// Print Dirs with link
print ("<a href=\"http://$url[Host]/$dir\">$dir</a> <br>\n");
}
else
{
// Print Dirs with link
print ("<a href=\"http://$url[Host]/$dir\" target=\"$target\">$dir</a> <br>\n");
}
}
}
}
Examples:
1.- List actual dir with no target option
<?php
list_dirs('.', '');
?>
2.- List "mydir" with a "_blank" as target name
<?php
list_dirs('/home/renich/www/mydir', '_blank')
?>
Notes:
- Its a simple function and it uses a function that interacts with apache. I don't know what will happen if you request a file list of a directory outside of the apache realm!
- Not fully tested!