如何使用ajax将多个点发送到php文件

var points = [point1, point2, point3]; // 假设这里有多个点的数据

var xhr = new XMLHttpRequest();
xhr.open("POST", "your_php_file.php", true);
xhr.setRequestHeader("Content-Type", "application/json");

xhr.onreadystatechange = function() {
  if (xhr.readyState === 4 && xhr.status === 200) {
    // 请求成功处理逻辑
    console.log(xhr.responseText);
  }
};

xhr.send(JSON.stringify(points));

$data = json_decode(file_get_contents('php://input'), true);

// 处理点的数据
foreach ($data as $point) {
  $x = $point['x'];
  $y = $point['y'];
  
  // 进行相应的处理逻辑，例如将点保存到数据库或进行其他计算
}

// 返回响应
$response = array('status' => 'success', 'message' => 'Points processed successfully');
echo json_encode($response);