php模拟登陆实例

<?php
// 登录URL
$url = 'https://example.com/login';

// 用户名和密码
$username = 'your_username';
$password = 'your_password';

// 获取登录页面内容
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);

// 提取表单字段
preg_match('/<input type="hidden" name="csrf_token" value="(.*?)">/', $response, $matches);
$csrfToken = $matches[1];

// 构造POST数据
$postData = [
    'username' => $username,
    'password' => $password,
    'csrf_token' => $csrfToken
];

// 发送POST请求
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($postData));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
curl_close($ch);

// 处理响应
if (strpos($response, 'Login successful') !== false) {
    echo '登录成功';
} else {
    echo '登录失败';
}
?>