从Unity写入服务器上的Text文件

Question

Hi I have been making an app in Unity and I have been trying to add code that will log User actions i.e. they have made a certain game object appear. What I am trying to do is write to a .txt file stored on a server I have the following code which is based on:

http://answers.unity3d.com/questions/984290/upload-txt-file-to-server-using-php.html

and they suggest it works, for me it is not writing anything to the file.

Here is my PHP code (SaveData.php):

<?php
         $Action = $_GET["action"];
         $Date = date('Y/m/d H:i:s');

         $myFile = "TestingData.txt";
         $fh = fopen($myFile, 'a') or die("can't open file");
         fwrite($fh,$Action . "," . $Date . "
");
         fclose($fh);
 ?>

And here is the C# (SaveData.cs) I am attaching to the game objects I change the Action value in the inspector window:

using UnityEngine;
using System.Collections;

public class SaveData : MonoBehaviour {

public string postDataURL = "http://arinstructionman.byethost7.com/SaveData.php?"; //add a ? to your url

         public string Action;

     void Start()
     {

         StartCoroutine(PostData(Action));
     }

     IEnumerator PostData(string action)
     {

         string post_url = postDataURL + "action=" + WWW.EscapeURL(action);

         WWW data_post = new WWW(post_url);

         yield return data_post;

         if (data_post.error != null)
         {
             print("There was an error saving data: " + data_post.error);
         }
     } 
 }

If I copy the post_url value and run it in the browser it seems to work fine, can anyone advise what I am doing wrong?

post_url output:

http://arinstructionman.byethost7.com/SaveData.php?action=Plane+Visible

Any help is much appreciated.

Answer 1

I would suggest trying this with $_POST instead of $_GET and see if you get a different response.
Also, you can use file_put_contents to open, write, and close the file all in one line, and using the FILE_APPEND flag to prevent overwriting the existing file. If the file does not exist, this will also create the file for you.

<?php
    if(!isset($_POST["action"])) 
    {
        echo ("NO DATA RECIEVED");
        return;
    }

    $action = $_POST["action"];
    $date = date('Y/m/d H:i:s');
    $data = "{$action},{$date}
";
    $myFile = "TestingData.txt";

    if(file_put_contents($myFile, $data, FILE_APPEND))
        echo ("success");
    else
        echo ("failed to write file);
 ?>

And use WWWform to POST data to the PHP file:

public string postDataURL = "http://arinstructionman.byethost7.com/SaveData.php";
public string Action = "some action";

void Start()
{
    StartCoroutine(PostData(Action));
}

IEnumerator PostData(string action)
{
    WWWForm form = new WWWForm();
    form.AddField("action", action);
    WWW dataPost = new WWW(postDataURL, form);

    yield return dataPost;

    if (dataPost.error != null)
        print("There was an error saving data: " + data_post.error);
    else
        print(dataPost.text);
}