PHPでgetallheaders()が動かない時用の関数 https://stackoverflow.com/questions/13224615/get-the-http-headers-from-current-request-in-php
<?php
if (!function_exists('getallheaders')) {
function getallheaders() {
$headers = array();
foreach ($_SERVER as $name => $value) {
if (substr($name, 0, 5) == 'HTTP_') {
$headers[str_replace(' ', '-', ucwords(strtolower(str_replace('_', ' ', substr($name, 5)))))] = $value;
}
}
return $headers;
}
}
// ヘッダー情報を出力
print_r(getallheaders());
?>