<?php
// 强制设置为纯文本，覆盖 nginx 的设置
header('Content-Type: text/plain; charset=utf-8');

echo "HTTP 请求头信息:\n";
echo str_repeat("=", 50) . "\n\n";

$headers = getallheaders();

foreach ($headers as $name => $value) {
    echo "$name: $value\n";
}

echo "\n" . str_repeat("=", 50) . "\n";
echo "共 " . count($headers) . " 个请求头\n";
?>