如何从套接字消息(PHP)中获取cookie？

<?php
function getCookieFromSocket($socketMessage) {
    // 解析套接字消息，获取HTTP请求头部和消息体
    list($header, $body) = explode("\r\n\r\n", $socketMessage, 2);
    
    // 获取HTTP请求头部信息
    $headers = getallheaders();
    
    // 获取"Cookie"字段的值
    $cookieHeader = isset($headers['Cookie']) ? $headers['Cookie'] : '';
    
    // 解析"Cookie"字段的值，拆分成多个cookie键值对
    $cookiePairs = explode('; ', $cookieHeader);
    
    // 遍历cookie键值对数组，进一步处理每个cookie的名称和值
    $cookies = array();
    foreach ($cookiePairs as $pair) {
        list($name, $value) = explode('=', $pair, 2);
        $cookies[$name] = $value;
    }
    
    return $cookies;
}

// 示例套接字消息
$socketMessage = "GET /index.php HTTP/1.1\r\nHost: example.com\r\nCookie: cookie1=value1; cookie2=value2\r\n\r\n";

// 获取cookie
$cookies = getCookieFromSocket($socketMessage);

// 打印cookie
print_r($cookies);
?>