Android Question web request too long

this work without img
InsertNewPerson.download2("http://" & ServerIP & "/persons.php", Array As String ("action", "InsertNewPerson", "name", NameET.Text, "age", AgeET.Text))

this does not work without img and with img
InsertNewPerson.postString("http://" & ServerIP & "/persons.php","action=InsertNewPerson & name="& NameET.Text &"&age="& AgeET.Text)

<?php

$host = "my server";
$user = "my user";
$pw = "my pass";
$db = "my db";

$con = mysql_connect($host,$user,$pw) or die(mysql_error());
mysql_select_db($db) or die(mysql_error());
mysql_query("SET CHARACTER SET utf8");
mysql_query("SET NAMES 'utf8'");

$action = $_POST["action"];
switch ($action)

{
    case "CountPersons":
        $q = mysql_query("SELECT * FROM persons");
        $count = mysql_num_rows($q);
        print json_encode($count);
    break;
   
    Case "GetPersons":
        $q = mysql_query("SELECT name, age FROM persons");
        $rows = array();
        while($r = mysql_fetch_assoc($q))
        {
            $rows[] = $r;
        }
        print json_encode($rows);
    break;
   
    case "InsertNewPerson":
        $name = $_POST["name"];
        $age = $_POST["age"];
        $q = mysql_query("INSERT INTO persons (name, age) VALUES ('$name', '$age')");
        print json_encode("Inserted");
    break;
   
}

?>

 case "SelectPersons":
        $name = $_POST["name"];
        $age = $_POST["age"];
        $img= $_POST["img"];     
        $q = mysql_query("select * from persons where name='$name'");
        print json_encode("Selected");
    break;