Typesetter-Original-gtbu/include/tool/Headers.php

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2021-09-08 19:52:21 +02:00
<?php
namespace gp\tool;
defined('is_running') or die('Not an entry point...');
class Headers{
/**
* Return a list of all http headers from the $_SERVER superglobal
* If $which is specified, return that single header
*
* @param string $which
* @return string|array
*
*/
public static function RequestHeaders($which = false){
$headers = [];
foreach($_SERVER as $key => $value) {
if( substr($key, 0, 5) <> 'HTTP_' ){
continue;
}
$header = str_replace(' ', '-', ucwords(str_replace('_', ' ', strtolower(substr($key, 5)))));
if( $which ){
if( strnatcasecmp($which,$header) === 0){
return $value;
}
}
$headers[$header] = $value;
}
if( !$which ){
return $headers;
}
}
/**
* Find a matching mime type from the 'accept' headers
*
* @param array $accepts List of
* @return string
*
*/
public static function AcceptMime($accepts){
$accept = self::RequestHeaders('accept');
if( $accept && preg_match_all('#([^,;\s]+)\s*;?\s*(?:q=([^,;\s]+))?#',$accept,$matches,PREG_SET_ORDER) ){
// filter acceptable mimes, default qvalue = 1
foreach($matches as $match){
$_mime = trim($match[1]);
if( !array_key_exists($_mime, $accepts) ){
continue;
}
if( isset($match[2]) ){
$accepts[$_mime] = (float)$match[2];
}else{
$accepts[$_mime] += 1;
}
}
}
// best mime will be first in the list after arsort()
arsort($accepts);
return key($accepts);
}
}