<?php

# Define Inital Variables
$fname = htmlspecialchars($_POST["fname"]);
$fmsg = htmlspecialchars($_POST["fmessage"]);
$savemsg = array("name" => $fname, "message" => $fmsg);


# Setup JSON
$data = json_decode(file_get_contents('test.json'), true);


# Add 
array_unshift($data , $savemsg);

# Check name and message
if ($fname == "") {
  echo "There is no name, Try again with a name";
  exit();
}
if ($fmsg == "") {
  echo "There is no message, Try again with a message";
  exit();
}

file_put_contents('test.json', json_encode($data, JSON_PRETTY_PRINT));

echo $fmsg;