My database shows 160 entries, but i only have 80 - php

Question

As the title says, I am facing some issues on a website.
My DB counts 80 entries, but on the front page, when I try an ajax query to get the total number of entries, it responds with 160 .
Also, this problem appeared today although the website was working fine for the last 5 days..
Thanks for reading, and I apologize for my English level.
The ajax query:
$(document).ready(function() {
$("#responsecontainer").load("countPost.php");
var refreshId = setInterval(function() {
$("#responsecontainer").load('countPost.php?randval='+ Math.random());
}, 1);
$.ajaxSetup({ cache: false });
});
And the countPost.php:
$nb_messages_requete = mysql_query("SELECT id FROM mybase");
$nb_entrees = mysql_num_rows($nb_messages_requete);
echo ''.$nb_entrees.''

Answer 1

this because you are loading the countPOST.php two times
try this
$(document).ready(function() {
var refreshId = setInterval(function() {
$("#responsecontainer").load('countPost.php?randval='+ Math.random());
}, 1);
$.ajaxSetup({ cache: false });
});
if you mean do your code every one second then replace this 1 by 1000
EDIT:
your cache looks desabled inside the function
try using it like that
$.ajaxSetup ({
// Disable caching of AJAX responses */
cache: false
});
$(document).ready(function() {
var refreshId = setInterval(function() {
$("#responsecontainer").load('countPost.php?randval='+ Math.random());
}, 1);
});