不一致的php curl登录失败

$cookieFile = 'cookie.txt';

$ch = curl_init();

// 设置登录URL和POST数据
curl_setopt($ch, CURLOPT_URL, 'https://example.com/login');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, 'username=your_username&password=your_password');

// 设置保存Cookie的文件路径
curl_setopt($ch, CURLOPT_COOKIEJAR, $cookieFile);

// 执行登录请求
curl_exec($ch);

// 后续请求使用保存的Cookie
curl_setopt($ch, CURLOPT_URL, 'https://example.com/protected_page');
curl_setopt($ch, CURLOPT_COOKIEFILE, $cookieFile);

// 执行后续请求
$response = curl_exec($ch);

// 关闭cURL会话和删除Cookie文件
curl_close($ch);
unlink($cookieFile);

$ch = curl_init();

// 设置登录URL和POST数据
curl_setopt($ch, CURLOPT_URL, 'https://example.com/login');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, 'username=your_username&password=your_password');

// 设置用户代理
curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.124 Safari/537.36');

// 执行登录请求
$response = curl_exec($ch);

// 关闭cURL会话
curl_close($ch);

$ch = curl_init();

// 设置登录URL和POST数据
curl_setopt($ch, CURLOPT_URL, 'https://example.com/login');
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, 'username=your_username&password=your_password');

// 禁用SSL证书验证
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);

// 执行登录请求
$response = curl_exec($ch);

// 关闭cURL会话
curl_close($ch);