Sum of numbers that was insert will automatic compute and appear in total text field

Good day!

I have a problem in adding codes in my php codes, but I have the concept of codes that I want to add in my php codes, but I don't know if it is right. Kindly check my codes thank you.


And here is the code I want to add:

Code:

<?php
include 'config.php';
$rexist = 0;
if($_POST["clt_no"])
{
   $opname = $_POST["opname"];
   $inqty = $_POST["inqty"];
   $outqty = $_POST["outqty"];
   
   $totalarr = count($opname) - 1;
    for($ctr=0; $ctr < $totalarr; $ctr++)
        {
        $inqty[$ctr] = (float) $inqty[$ctr];
        $outqtyqty[$ctr] = (float) $outqty[$ctr];
        
         $query = "INSERT INTO clt_traceability (operation_name, input_qty, clt_transact_id) VALUES ('" . $opname[$ctr] . "',  '" . $inqty[$ctr] . "', '" . $outqty[$ctr] . "', '" . $clt_transact_id . "')";
        $result = mysql_query($query);
        }   
        
    $query = "SELECT * FROM clt_transact WHERE  clt_no = '" . $_POST["clt_no"] . "'";
    $result_no = mysql_query($query);
        if($result_no)
            {
            if(mysql_num_rows($result_no) > 0 )
            {
            $operation1_input = 0;
            $operation1_inputtotal = 0;
            
            $query = "SELECT SUM(t.input_qty) AS operation1_input FROM clt_traceability t, p WHERE t.clt_transact_id = p.clt_transact_id AND t.operation_name 'Operation1' AND p.clt_no='" . $_POST["clt_no"] . "'";
            $resultyield = mysql_query($query);
            if($resultyield)
                {
                    if(mysql_num_rows($resultyield) > 0)$operation1_input =mysql_result($resultyield,0,"operation1_input");
                }
          
            $query = "SELECT operation_name FROM clt_traceability t, clt_transact c WHERE t.operation_name = 'Operation1_total' AND t.clt_transact_id = c.clt_transact_id";
            $result = mysql_query($query);
            if($result > 0)
            {           
            $operation1_inputtotal = $operation1_input;
          
            }
            }
            
            if(mysql_num_rows($result_no) > 0 )
            {
            $operation1_output = 0;
            $operation1_outputtotal = 0;
            
            $query = "SELECT SUM(t.output_qty) AS operation1_output FROM clt_traceability t, p WHERE t.clt_transact_id = p.clt_transact_id AND t.operation_name 'Operation1' AND p.clt_no='" . $_POST["clt_no"] . "'";
            $resultyield = mysql_query($query);
            if($resultyield)
                {
                    if(mysql_num_rows($resultyield) > 0)$operation1_output =mysql_result($resultyield,0,"operation1_output");
                }
          
            $query = "SELECT operation_name FROM clt_traceability t, clt_transact c WHERE t.operation_name = 'Operation1_total' AND t.clt_transact_id = c.clt_transact_id";
            $result = mysql_query($query);
            if($result > 0)
            {           
            $operation1_outputtotal = $operation1_output;
          
            }
            }
            
            if(mysql_num_rows($result_no) > 0 )
            {
            $operation2_input = 0;
            $operation2_inputtotal = 0;
            
            $query = "SELECT SUM(t.input_qty) AS operation2_input FROM clt_traceability t, p WHERE t.clt_transact_id = p.clt_transact_id AND t.operation_name 'Operation2' AND p.clt_no='" . $_POST["clt_no"] . "'";
            $resultyield = mysql_query($query);
            if($resultyield)
                {
                    if(mysql_num_rows($resultyield) > 0)$operation2_input =mysql_result($resultyield,0,"operation2_input");
                }
        
            $query = "SELECT operation_name FROM clt_traceability t, clt_transact c WHERE t.operation_name = 'Operation2 _total' AND t.clt_transact_id = c.clt_transact_id";
            $result = mysql_query($query);
            if($result > 0)
            {           
            $operation2_total = $operation2_input;
          
            }
            }
            
             if(mysql_num_rows($result_no) > 0 )
            {
            $operation2_output = 0;
            $operation2_ouputtotal = 0;
            
            $query = "SELECT SUM(t.output_qty) AS operation2_output FROM clt_traceability t, p WHERE t.clt_transact_id = p.clt_transact_id AND t.operation_name 'Operation2' AND p.clt_no='" . $_POST["clt_no"] . "'";
            $resultyield = mysql_query($query);
            if($resultyield)
                {
                    if(mysql_num_rows($resultyield) > 0)$operation2_output =mysql_result($resultyield,0,"operation2_output");
                }
        
            $query = "SELECT operation_name FROM clt_traceability t, clt_transact c WHERE t.operation_name = 'Operation2 _total' AND t.clt_transact_id = c.clt_transact_id";
            $result = mysql_query($query);
            if($result > 0)
            {           
            $operation2_outputtotal = $operation2_output;
          
            }
            }
    }
}
$rexist = 0;
?>

<html>
<head>
    <style type="text/css">
    .myclass {
     font-size: 10pt; font-family:Arial, Helvetica, sans-serif;
    }
    </style>
    
    <script type="text/javascript">
document.onkeypress = function(e){
    e = e || event; e.returnValue = true;
    var t = e.target || e.srcElement, re = /^(inqty|outqty)(\d+)$/, f = arguments.callee, m, i;
    function next(){
        if(!f.els && (m = t.form) === document.forms.clttype){
            var ipts = m.getElementsByTagName('input'), els = []; i = ipts.length - 1;
            for (i; i > -1; --i){
                if(ipts[i].type && ipts[i].type.toLowerCase() === 'text'){
                    els.push(ipts[i]);
                }
            }
            f.els = els;
        }
        if(f.els){
            i = f.els.length - 1;
            for (i; i > -1; --i){
                if(f.els[i] === t && (m = f.els[i - 1])){
                    m.focus();
                }
            }
        }
    }
    if((m = re.exec(t.id)) && e.keyCode === 13){
        e.returnValue = false;
        t.form.elements['varqty' + m[2]].value = t.form.elements['inqty' + m[2]].value - t.form.elements['outqty' + m[2]].value;
    } else if (t.type && e.keyCode === 13 && t.type.toLowerCase() !== 'submit') {
        e.returnValue = false;
    }
    if(!e.returnValue){
        next();
        if(e.preventDefault){e.preventDefault();}
    }
    return e.returnValue;
}
</script>
</head>
<body>
<form action='frame.php' method="post" name="clttype">

<?php
    $rexist = 1;
    
    
    
    $query = "SELECT * FROM clt_trace_operations ORDER BY operation_name";
    $last_operation_name = "";
    $result = mysql_query($query);
    if($result)
        {
        $rexist = 1;
        echo "<table>";
        echo "<tr><th class='myclass'>OPERATIONS</th><th class='myclass'>INPUT <br/> QTY</th><th class='myclass'>OUTPUT <br/> QTY</th><th class='myclass'>VARIANCE Qty</th></tr>";
        $totalrows = mysql_num_rows($result);
        $trows = $totalrows - 1;
        for($ctr = 0; $ctr < $trows; $ctr++)
            {
            $row = mysql_fetch_array($result);
            $tctr = $ctr + 1;
            echo "\n\t<tr>";
            echo "\n\t\t<td>";
            if ($last_operation_name != $row["operation_name"]) echo $row["operation_name"];
            $last_operation_name = $row["operation_name"];
            echo "<input type='hidden' width='400' name='opname[]' value='" . $row["operation_name"] . "' /></td>";  
            echo "\n\t\t<td><input size='6' type='text' name='inqty[]' id='inqty" . $ctr . "' /></td>";
            echo "\n\t\t<td><input size='6' type='text' name='outqty[]' id='outqty" . $ctr . "' ></td>";
            echo "\n\t\t<td><input size='6' type='text' name='varqty[]' id='varqty" . $ctr . "' /></td>";
            echo "\n\t</tr>";
            }
        if($totalrows > 1);
            {
            $row = mysql_fetch_array($result);
            echo "\n\t<tr>";
            echo "\n\t\t<td>";
            if ($last_operation_name != $row["operation_name"]) echo $row["operation_name"];
            $last_operation_name = $row["operation_name"];
            echo "<input type='hidden' width='400' name='opname[]' value='" . $row["operation_name"] . "' /></td>";   
            echo "<input type='hidden' name='opname[]' value='" . $row["operation_name"] . "' /></td>";
            echo "\n\t\t<td><input size='6' type='text' name='inqty[]' id='inqty"  . $ctr . "' /></td>";
            echo "\n\t\t<td><input size='6' type='text' name='outqty[]'  id='outqty" . $ctr . "'  /></td>";
            echo "\n\t\t<td><input size='6' type='text' name='varqty[]' value=''  id='varqty" . $ctr . "' /></td>";
            echo "\n\t</tr>";
            }
        echo "</table>";
        }   
           echo "<p><input type='submit' value='  Save  ' id='saveform' /></p>";
    echo "<input type='hidden' name='clt_typeno' value='" . $_POST["clt_typeno"] . "' />";
?>
</form>
</body>
</html>
 

I want to happen be in operation1 and operation 2 the input qty and output qty will automatically compute the sum and the result will appear in the total.
I don't know how thus the result should be appearing automatically in the total textfield. I mean is the sum of input qty of operation 1 will automatic appear in operation1_total and also with the output qty, same with the operation2.


Kindly tell me what is missing or wrong.

Thank you