title: Post Method using Volley Library returns empty result
body: <p><strong>Hello, I am trying to request a POST method in Volley library but it returns empty result (the filed is empty) as shown in my php code, so whats the problem?
  but if i change to GET METHOD, it's working well?
  i know that the same question in the platform, but I need help in this code</strong></p>
  <p><strong>HERE IS KOTLIN CODE</strong></p>
  <pre><code>@Composable
  
  fun Drop(navController: NavController) {
     val context = LocalContext.current
     val list = listOf(
        19, 20, 21, 22, 23, 24, 25
     )
     val expanded = remember { mutableStateOf(false) }
     val currentValue = remember { mutableStateOf(list[0]) }
  
     Surface(modifier = Modifier.fillMaxSize()) {
        Box(
           modifier = Modifier
              .fillMaxWidth()
        ) {
  
       Row(modifier = Modifier
          .background(Color.Cyan)
          .padding(10.dp)
          .width(140.dp)
          //.size(100.dp)
          .clickable {
             expanded.value = !expanded.value
          }
          .align(Alignment.Center)) {
          Text(text = currentValue.value.toString())
          Icon(imageVector = Icons.Filled.ArrowDropDown, contentDescription = null)
  
          DropdownMenu(
             expanded = expanded.value,
             onDismissRequest = {
                expanded.value = false
             }) {
  
             list.forEach {
                DropdownMenuItem(onClick = {
                   currentValue.value = it
                   expanded.value = false
  
                   val queue = Volley.newRequestQueue(context)
                   val url =
                      &quot;https://adeega.xisaabso.online/Api/Settings.php?phone=${currentValue.value}&quot;
  
                   // Request a string response from the provided URL.
                   val stringRequest = StringRequest(
                      Request.Method.POST, url,
                      { response -&gt;
                         Toast.makeText(context, response.toString(), Toast.LENGTH_SHORT).show()
                      },
                      {
                         //textView.text = &quot;That didn't work!&quot;
                      })
  
                   // Add the request to the RequestQueue.
                   queue.add(stringRequest)
  
                }) {
                   Text(
                      text = &quot;Xisaabta: &quot; + it.toString(),
                      fontSize = 22.sp
                   )
                }
             }
          }
       }
    }
  }
  }
  </code></pre>
  <p><strong>PHP CODE</strong></p>
  <pre><code>&lt;?php 
  
  header(&quot;Content-Type: application/json; charset=UTF-8&quot;);
  require_once '../config/config.php';
  require_once '../Queries/Queries.php';
  
  
  if(empty($_POST['phone'])) {
    echo json_encode('the filed is empty');
  }
  
  else {
    echo json_encode('ok');
    ......................
  }
  </code></pre>