Query in Jquery IF statement - php

Question

I have a jquery save script like :
naam = prompt('Give a name for your file.');
if(naam != null)
{
var div_contents = $("#print").html();
$.post("save.php", { 'contents': div_contents,'naam':naam });
alert('Your file is save as : '+ naam);
window.location.replace("index.php?id=latest");
}
else
{
alert('Not saved');
}
I save a div in save.php which creates an new id in the database
What I want to achive is were
window.location.replace("index.php?id=latest");
id=latest must become (id=id from last saved file).
I tried
$q = "select MAX(id) from Moodboards";
$result = mysql_query($q);
$data = mysql_fetch_array($result);
$MBId = $data[0];
window.location.replace("index.php?id="+MBId);
and
var MBID =
<?php
$q = "select MAX(id) from Moodboards";
$result = mysql_query($q);
$data = mysql_fetch_array($result);
$MBId = $data[0];
echo $MBId ?>
window.location.replace("index.php?id="+MBId);
They both failed.
How can I run the query in the if(naam !=null) statement?

Answer 1

At first place you must fix your jQuery POST... You don't use POST respond which is wrong.. You should wait for it and then continue with other actions
naam = prompt('Give a name for your file.');
if(naam != null)
{
var div_contents = $("#print").html();
$.post("save.php", { 'contents': div_contents,'naam':naam }, function(responde){
if(responde.id)
window.location.replace("http://yoururl.com/index.php?id="+responde.id);
else
alert("No responde...");
}, "json");
}
else
{
alert('Not saved');
}
For better results I suggest you to use JSON data in that post/respond..
At your PHP code you have to set:
<?php
$q = "select MAX(id) from Moodboards";
$result = mysql_query($q);
$data = mysql_fetch_array($result);
$MBId = $data[0];
echo json_encode(array('id'=>$MBId));
exit();
?>
P.S. For window.location.replace please set your FULL url: "http://localhost/index.php?id=" OR atleast put slash at start of it "/index.php?id="

Answer 2

Solution
if(naam != null)
{
var div_contents = $("#print").html();
$.post("save.php", { 'contents': div_contents,'naam':naam });
alert('Uw moodboard is opgeslagen als '+ naam);
window.location.replace("index.php?id=<?php $q = "select MAX(id) from Moodboards";
$result = mysql_query($q);
$data = mysql_fetch_array($result);
$MBId = ($data[0] + 1); echo "$MBId";?>");
}
This Works for me , i didnt need to make a jquery var i could echo the variable in php.
And i had to add 1 cause the sql query is loaded when the page is loaded.
So the file isn't saved yet when i get the highest id.