PHP - mysql DELETE query executing after INSERT query [closed]

I'm in a bit of a crunch and can't seem to figure out what is going on with my mysql queries.

I have one query at the beginning of the page that is a DELETE:

$sql  = "DELETE FROM CART_CARD WHERE cartID=".$_SESSION['cartID'].";";

and another at the end of the page that is an INSERT:

$sql="INSERT INTO CART_CARD (cartID, cardID, cardTo, cardFrom, cardEmail, cardImage, cardNote) VALUES(".$_SESSION["cartID"].",".$_POST["cardID".$cardNum].",'".$tmp_to."','".$tmp_from."','".$_POST["email".$cardNum]."','".$_POST["image".$cardNum]."','".$tmp_note."');";

Now both queries work fine on there own but when I have them both uncommented the second query either is not inserting or the DELETE query is running after the insert.

I know there is UPDATE but don't think that is what I need because the idea is there could be 10 items in this table with that ID, and want to clear them all out and only add 1, 2, 3 new ones depending on the situation.

To me it seems like the DELETE is running after the UPDATE (even though the delete is before the insert on the page) since I'm not getting any errors. Is this possible?

The full code is:

<?php 

include("functions/gcsession.php");
?>

<?php 
    $sql  = "DELETE FROM CART_CARD WHERE cartID=".$_SESSION['cartID'].";";
    //echo $sql."<br>";
    mysql_query($sql) or die(mysql_error()); 
    $viaMail = "[email protected]"; 
    get_header();
    echo $_SESSION["cartID"];
?>

<!-- Start Page Content -->
<div class="main_content">

<table align="center" border="0" cellpadding="0" cellspacing="0" width="900">
<!-- fwtable fwsrc="index.png" fwbase="index.jpg" fwstyle="Dreamweaver" fwdocid = "127155253" fwnested="0" -->

  <tr>
   <td colspan="6"  valign="top">
    <!--start code here ---------->
      <noscript><div align="center" style="color:#FF0000;">Please enable JavaScript to view this website correctly.</div><br />
</noscript>

      <?php $validateEmail = true;
        for($i=1;$i<=$_POST["cardNum"];$i++){
            $cardNum = $i;
            $emailTo = "";
            if($_POST["email".$cardNum]=="" && ($_POST["emailTo".$cardNum]==$viaMail))
               $emailTo = $viaMail;
            else
               $emailTo = $_POST["email".$cardNum];
            if($emailTo=="")   
                $validateEmail = $validateEmail && false;
            else
                $validateEmail = $validateEmail && true;
            if($emailTo==$viaMail){

                $tmp_to = $_POST["to".$cardNum];
                $tmp_from = $_POST["from".$cardNum];
                $tmp_note = $_POST["note".$cardNum];
                $tmp_sname = $_POST["senderName".$cardNum];
                $tmp_sadr1 = $_POST["senderAddr1".$cardNum];
                $tmp_sadr2 = $_POST["senderAddr2".$cardNum];
                $tmp_scity = $_POST["senderCity".$cardNum];

                $tmp_rname = $_POST["recpName".$cardNum];
                $tmp_radr1 = $_POST["recpAddr1".$cardNum];
                $tmp_radr2 = $_POST["recpAddr2".$cardNum];
                $tmp_rcity = $_POST["recpCity".$cardNum];

                $sql="INSERT INTO CART_CARD (cartID, cardID, cardTo, cardFrom, cardEmail, cardImage, cardNote,senderName,senderAddr1,senderAddr2,senderCity,senderState,senderZip,
                recpName,recpAddr1,recpAddr2,recpCity,recpState,recpZip) VALUES(";
                $sql .= $_SESSION["cartID"].",".$_POST["cardID".$cardNum].",'".$tmp_to."','".$tmp_from."','".$emailTo."','".$_POST["image".$cardNum]."','".$tmp_note."','".$tmp_sname."','".$tmp_sadr1."','".$tmp_sadr2."','".$tmp_scity."','".$_POST["senderState".$cardNum]."','".$_POST["senderZip".$cardNum]."','".$tmp_rname."','".$tmp_radr1."','".$tmp_radr2."','".$tmp_rcity."','".$_POST["recpState".$cardNum]."','".$_POST["recpZip".$cardNum]."')";

                error_log("[".date("j-M-Y G:i:s")."] viaMail CART_CARD sql=".$sql."\n", 3, "log-chkout-".date("Y-m").".txt");
            }else{                         
                $tmp_to = mysql_real_escape_string($_POST["to".$cardNum]);
                $tmp_from =mysql_real_escape_string( $_POST["from".$cardNum]);
                $tmp_note = mysql_real_escape_string($_POST["note".$cardNum]);

                $sql="INSERT INTO CART_CARD (cartID, cardID, cardTo, cardFrom, cardEmail, cardImage, cardNote) VALUES(".$_SESSION["cartID"].",".$_POST["cardID".$cardNum].",'".$tmp_to."','".$tmp_from."','".$_POST["email".$cardNum]."','".$_POST["image".$cardNum]."','".$tmp_note."');";
                error_log("[".date("j-M-Y G:i:s")."] email CART_CARD sql=".$sql."\n", 3, "log-chkout-".date("Y-m").".txt");
            }           

            $insertSQL = mysql_query($sql) or die(mysql_error());

    }// end for i
?>

               <div align="center" class="style8"><br> 
                 <!-------end code here-------->
<?php if($validateEmail){ ?>
                 One moment please...<br>
If you experience a delay, please click &nbsp; 
                  <input type="submit" name="button" id="button" value="Proceed to Check Out">
<?php }else{ ?>
                 The recipient email is blank.<br>
Please ensure you enable JavaScript on your browser and try again. &nbsp; 
                  <input type="button" name="redo" id="button" onClick="location.href='/gift-certificates/" value="Start Over">

<?php } ?>                 
                          </div>
    </form>   </td>

  </tr>

</table>
</div>
<script type="text/JavaScript">
<!--
<?php if($validateEmail){ ?>
    //document.redirect.submit();
<?php }else{ ?>
    alert('The recipient email is blank. Please ensure you enable JavaScript on your browser and try again.');
    location.href='<?php echo $siteURL?>/gift-certificates/';
<?php } ?>
//-->
</script>
<?php get_footer();?>