auto reload page in chat php code example

Example 1: auto reload page in chat php

$sql = "select * from chat order by id desc limit 15";
    $result = mysql_query($sql) or die ("An error has occured with in the database.");

Example 2: auto reload page in chat php

$(document).ready(function() {
  // check once in five seconds
  setInterval(function() {
    $.get('/script.php', {do: 'new_messages'}, function(response) {
      if(response == 1) {
        window.location.reload();
      }
    });
  }, 5000); 
});