php curl登录instagram进入重定向循环

<?php
function loginInstagram($username, $password) {
    $loginUrl = 'https://www.instagram.com/accounts/login/ajax/';
    $postData = 'username=' . urlencode($username) . '&password=' . urlencode($password);

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $loginUrl);
    curl_setopt($ch, CURLOPT_POST, true);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $postData);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_MAXREDIRS, 5); // 设置最大重定向次数

    $response = curl_exec($ch);
    $redirectCount = 0;

    while (($redirectUrl = curl_getinfo($ch, CURLINFO_REDIRECT_URL)) && $redirectCount < 5) {
        curl_setopt($ch, CURLOPT_URL, $redirectUrl);
        $response = curl_exec($ch);
        $redirectCount++;
    }

    curl_close($ch);

    // 处理最终的响应数据
    // ...

    return $response;
}

// 使用示例
$username = 'your_username';
$password = 'your_password';
$response = loginInstagram($username, $password);

// 处理响应数据
// ...
?>