<?php

function        select_all($path)
{
  $file = file_get_contents($path.".json");
  $dec = json_decode($file);
  return($dec);
}
select_all("users");

function        new_tab($path, $new_content)
{
  $old = select_all($path) ;
  array_push($old, $new_content);
  $new = json_encode($old);
  file_put_contents($path.".json", $new);
  var_dump($old);
}
new_tab("users", "hello");

?>