System Don't Send Message Again When Refresh The Sent Page

I have a message system - Working fine. But how can i make when someone send message, and if he refresh sent page the system dont send message second, 3 , 4 , 5 ...... times - just once.



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[Code]...

It goes to a new page and shows the error (if there is one) and if not it goes to a blank page (I know how to make it go to a page but it needs to be kept on its current page) It does work with sending the info to the email.

I have tried header("Location: ".$_SERVER["PHP_SELF"]); And it didnt work..

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It's working to my favor but I don't trust it unless I know why it's working.Real world example:

I reference $_SESSION['message'] twice in my code.First looks like this:[code]...

Second looks like this:echo $_SESSION['message'];

For some reason, this is working for me and $_SESSION['message'] is getting unset after it's echo'd (but the user remains logged in so I know the entire session is not getting unset).

Test example: I put the following code in test.php:
<?php
session_start();
$_SESSION['message']++;
echo $_SESSION['message'];
?>

When I hit refresh, reload the page, etc. the number doesn't increment, it's stays as '1'. If I change it to $_SESSION['success_message'] the number does increment.So? Is $_SESSION['message'] reserved? Does it automatically reset once it's echo'd? I didn't find anything in the manual on this.

UPDATE:I just checked in Firefox and test.php works as expected. In Chrome it doesn't. Chrome does so many wacky things, I wouldn't be surprised if it's resetting $_SESSION['message'].

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PHP Code:
<?php
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?>

Now this is working fine and I'm able to work with the XML data to populate my website - this data is only updated when the page is refreshed; therefore I wondered if there was a way I could send out this request every couple of seconds without a page refresh?

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Now the problem comes here: when a song in a playlist is finished, I'd like to refresh the page and send incremented itemId via post request, so the server side will know which song I'm currently listening to.
I've searched the internet for possible solutions how to refresh a page and send post data at the same time, but all I've found are Ajax tutorials.

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Here is my form. It submits fine, but it redirects to the external web page after the form is sent.

<form id="widget_contact" action="http://www.website.com/" method="post">
<input type="text" name="pcode" id="fc_name" />
<input type="hidden" name="hdnCmd" value="sb-gimme" />
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</form>

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//if the UPDATE TOTAL button is pressed
if (isset($_POST) && $_POST['update'] == "Update Total") {
     $quantityarray = $_POST['quantity'];
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                ?><meta http-equiv="refresh" content="0"><?php
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    $check_stock_item = mysql_fetch_assoc($checkstock);
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If I use a header("LOCATION: http://domain.com/view_pictures.php"), the
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I have tried several ideas to force the reloading of the image file with no
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I cannot change the image file name.

Even if I add another a second image, the first image does not change.

IE must use the file name to determine if it should reload the file. But F5
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$.ajax({
type: "POST",
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[code]...

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<form id="myform" name="myform" method="post" action="Mailer.php">

So user fills in form, hits submit and the page changes to mailer.php and they find their way back to where they were.

What I want instead is for the to stay on the same page when submit is pushed. The form div to update itself to just say 'message sent' or something. I just want to avoid a full page refresh.

Much like how on say facebook, commenting on a status only updates that div.

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now i want to be able to delete messages

This is code im using to display messages. i also added a form as i thought i need some kind of checkbox and somedata to be passed then on the maildelete.php im struggling to figure out what i should be checking for and my query

<?php
include_once 'Connect.php'; This starts session, connect to database and calls any functions needed
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[Code]....

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