从android应用程序或java中执行PHP脚本

我尽量避免问这个问题，因为之前也有人问过类似的问题，但是，解决方案仍然不清楚

我目前有一个PHP脚本，它在执行时会向数据库中的所有用户发送通知

此脚本存储在localhost中

以下是脚本：

<?php 
function send_notification ($tokens, $message)
{
    $url = 'https://fcm.googleapis.com/fcm/send';
    $fields = array(
         'registration_ids' => $tokens,
         'data' => $message
        );
    $headers = array(
        'Authorization:key = AIzaSyDYzkdd3aPZtgg4VkZQkLu7vombVecin4M',
        'Content-Type: application/json'
        );
   $ch = curl_init();
   curl_setopt($ch, CURLOPT_URL, $url);
   curl_setopt($ch, CURLOPT_POST, true);
   curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
   curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
   curl_setopt ($ch, CURLOPT_SSL_VERIFYHOST, 0);  
   curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
   curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($fields));
   $result = curl_exec($ch);           
   if ($result === FALSE) {
       die('Curl failed: ' . curl_error($ch));
   }
   curl_close($ch);
   return $result;
}

$conn = mysqli_connect("localhost","root","root","fcm");
$sql = " Select Token From users";
$result = mysqli_query($conn,$sql);
$tokens = array();
if(mysqli_num_rows($result) > 0 ){
    while ($row = mysqli_fetch_assoc($result)) {
        $tokens[] = $row["Token"];
    }
}
mysqli_close($conn);
$message = array("message" => " Welcome to Remi.");
$message_status = send_notification($tokens, $message);
echo $message_status;
 ?>

有没有一种可能的解决方案可以从Android java应用程序执行PHP脚本？

---

谢谢您的时间。

我在从android/java启动PHP脚本时遇到了麻烦。对的确我可以看出你在代码上有哪些问题。但是，如果您甚至不知道发生了什么问题和发生了什么……哦，对不起，java代码是我试图从java中查找和执行PHP脚本的尝试。我试过几种方法，但都没用。运行时也没有错误。点击按钮什么也不做，我不确定我的代码中缺少了什么（或者即使这是正确的方法），它会立即使你的应用程序崩溃。您应该在catch块中放置Toast（），否则用户不知道ioexception。但是你的应用程序现在崩溃了。。如果没有，那么你用错了按钮。
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.webkit.WebView;
import android.widget.Button;
import android.widget.TextView;
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;

public class CreateActivity extends AppCompatActivity {
WebView myBrowser;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_create);
    final TextView mTextView = (TextView) findViewById(R.id.desc);
    Button create = (Button) findViewById(R.id.email_sign_in_button);
    create.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {

            try {
               launchPHP();
               launchPHP2();

            } catch (Exception e){
                //
            }

           //myBrowser = (WebView) findViewById(R.id.mybrowser);
           //assert myBrowser != null;
           //myBrowser.loadUrl("file:///android_asset/reminder.htaccess");



        }
    });

}
private void launchPHP() throws Exception{
    URL url = new URL("http://192.168.0.20/fcm/push_notification.php/");
    URLConnection conn = url.openConnection();
    BufferedReader in = new BufferedReader(
            new InputStreamReader(
                    conn.getInputStream()));
    String inputLine;

    while ((inputLine = in.readLine()) != null)
        System.out.println(inputLine);
    in.close();
}
private void launchPHP2() throws Exception{
    URL url = new URL("http://192.168.0.20/fcm/push_notification.php/");
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    if (conn.getResponseCode() == HttpURLConnection.HTTP_OK){
        InputStream is = conn.getInputStream();
    } else {
        InputStream err = conn.getErrorStream();
    }
}

}