PHP - Need Assistance With Ending Discount Offer...

Hey Guys,  So I'm stuck on a particular line of PHP for woocommerce the code I have hear works for doing 2 levels of discount.

1 - The discount code in woocommerce coupon settings gives - 10% off for products in category named "10OFF" - Coupon settings are in the image below 

2. This code here then allows the same coupon to give 15% off off products in category named "15OFF"

3. What I can't seem to work out, is how to add another layer to this, where the same coupon will give 35% off products in a category named "35OFF"

I get the feeling this is something really super obvious to someone who knows more about PHP coding than myself! I've tried multiple IF statements, that breaks the whole thing. I'm confident Creating multiple Categories is the way forward. I just can't work out how to add the new categories to the code that doesn't suddenly break the whole thing again stopping all discounts being taken off each item.

Any advice would be hugely appreciated! I know the Code could be a lot neater in general, but I'm really new to PHP

Kind Regards to all

Liam

add_filter( 'woocommerce_coupon_get_discount_amount', 'alter_shop_coupon_data', 20, 5 );
function alter_shop_coupon_data( $round, $discounting_amount, $cart_item, $single, $coupon ){

//Settings//

    $coupon_codes = array('bigsavings');

    // Product categories at 15% 
    $product_category15 = array('15off'); // for 15% discount

    $second_percentage = 0.015; // 15 %

   // Code//

    if ( $coupon->is_type('percent') && in_array( $coupon->get_code(), $coupon_codes ) ) {
        if( has_term( $product_category15, 'product_cat', $cart_item['product_id'] ) ){
            $original_coupon_amount = (float) $coupon->get_amount();
            $discount = $original_coupon_amount * $second_percentage * $discounting_amount;
            $round = round( min( $discount, $discounting_amount ), wc_get_rounding_precision() );
        }
    }
    return $round;
}

 <td> <input type="text" name="item[]" id="category" value="<?php echo $row1['item'];?>"  /></td>
 <td> <input type="text" name="uom[]" class="span2"  value="<?php echo $row1['uom'];?>"  /></td>
 <td> <input type="text" name="description[]" value="<?php echo $row1['description'];?>"  /></td>
 
 <td><input type="text" class="jQinv_item_qty span1" name="quantity[]"  /></td>
 
 <td><input type="text" class="jQinv_item_unit span1" name="price[]" value="<?php echo $row1['selling_price'];?>" /></td>
 

 <td><select name="tax[]" class="jQinv_item_tax span1">
 <option value="<?php echo $row1['tax'];?>"><?php echo $row1['tax'];?></option>
 <?php $l1 = mysql_query("select * from taxes") or die (mysql_error());
 while($l2 = mysql_fetch_array($l1))
 { ?>
 <option value="<?php echo $l2['rate']; ?>"> <?php echo $l2['name'];?> - <?php echo $l2['rate'];?>% </option>
 <?php } ?> </select></td>
 
 <td>
 <input type="text" class="jQinv_item_discount span1" name="discount[]"  value="<?php echo $row1['discount'];?>"  /></td>
 
<td><input type="text" class="jQinv_item_frt span1" name="freight[]"  placeholder="Freight"  /></td>
 
<td><input type="text" class="jQinv_item_frtax span1" name="freight_tax[]" placeholder="Frt Tax"   /></td>
 
<td><input type="text" class="jQinv_item_total span2" name="total[]"  /></td>

a =( ((Quantity * Price) - Discount) * (tax/100) )  + Freight + (Freight * (Freight tax/100))

 function rowInputs() {
            var balance = 0;
            var subTotal = 0;
            var taxTotal = 0;
            $(".invE_table tr").not('.last_row').each(function () {
                var $unit_price = $('.jQinv_item_unit', this).val();
                var $qty = $('.jQinv_item_qty', this).val();
                var $tax = $('.jQinv_item_tax', this).val();
var $discount = $('.jQinv_item_discount', this).val();
var $frt = $('.jQinv_item_frt', this).val();
var $frtax = $('.jQinv_item_frtax', this).val();
                
                var $total = (($unit_price * 1) * ($qty * 1))- $discount;
                var $tax_amount = (($total) *($tax/parseFloat("100")));
                var $total_amount = (($tax_amount) + ($frt)) + $frtax;
                
                
                var parsedTotal = parseFloat( ('0' + $total_amount).replace(/[^0-9-\.]/g, ''), 10 );
                var parsedTax = parseFloat( ('0' + $tax_amount).replace(/[^0-9-\.]/g, ''), 10 );
                var parsedSubTotal = parseFloat( ('0' + $total).replace(/[^0-9-\.]/g, ''), 10 );
                
                $('.jQinv_item_total',this).val(parsedTotal.toFixed(2));
                
                subTotal += parsedSubTotal;
                taxTotal += parsedTax;
                balance += parsedTotal;
                
            });
            var discount = parseFloat( ('0' + $('#inv_discount').val()).replace(/[^0-9-\.]/g, ''), 10 );
            var balance_disc = balance - discount;
            
            $(".invE_subtotal span").html(subTotal.toFixed(2));
            $(".invE_tax span").html(taxTotal.toFixed(2));
            $(".invE_discount span").html(discount.toFixed(2));
            $(".invE_balance span").html(balance_disc.toFixed(2));
        }

Hello,

I have the $_session code working, but after I destroy the session and I am asked to log in again, my browser doesn't ask me for my password and just logs me in.

I don't understand because I have destroyed my session and I have deleted the data in $_SESSION and I have deleted the info in the cookie so it shouldn't log me in automatically. I thought it was something in my browser, but I erased my history and I never saved any password.

Here's my code:

This is the welcome page

<?php
    require_once 'login.php';
    $connection = new mysqli($db_hostname, $db_username, $db_password, $db_database);
    
    if ($connection->connect_error) die($connection->connect_error);
    
    if (isset($_SERVER['PHP_AUTH_USER']) && isset($_SERVER['PHP_AUTH_PW']))
    {
        $un_temp = mysql_entities_fix_string($connection, $_SERVER['PHP_AUTH_USER']);
        $pw_temp = mysql_entities_fix_string($connection, $_SERVER['PHP_AUTH_PW']);
        
        $query = "SELECT * FROM users WHERE username='$un_temp'";
        $result = $connection->query($query);
        
        if (!$result) die($connection->error);
        elseif ($result->num_rows)
        {
            $row = $result->fetch_array(MYSQLI_NUM);
            
            $result->close();
            
            $salt1 = "qm&h*";
            $salt2 = "pg!@";
            
            $token = hash('ripemd128', "$salt1$pw_temp$salt2");
            
            if ($token == $row[3])
            {
                session_start();
                $_SESSION['username'] = $un_temp;
                $_SESSION['password'] = $pw_temp;
                $_SESSION['forename'] = $row[0];
                $_SESSION['surname'] = $row[1];
                
                echo "$row[0] $row[1] : Hi $row[0], you are now logged in as '$row[2]'";
                
                die("<p><a href=continue.php>Click here to continue</a></p>");
            }
            else die("Invalid username/password combination");
        }
        else die("Invalid username/password combination");
    }
    else
    {
        header('WWW-Authenticate: Basic realm="Restricted Section"');
        header('HTTP/1.0 401 Unauthorized');
        die("Please enter your username and password");
    }
    $connection->close();
        
    function mysql_entities_fix_string($connection, $string)
    {
        return htmlentities(mysql_fix_string($connection, $string));
    }
        
    function mysql_fix_string($connection, $string)
    {
        if (get_magic_quotes_gpc()) $string = stripslashes($string);
        return $connection->real_escape_string($string);
    }
?>

and this is the other page:

<?php
    session_start();
    
    if(isset($_SESSION['username']))
    {
        $username = $_SESSION['username'];
        $password = $_SESSION['password'];
        $forename = $_SESSION['forename'];
        $surname = $_SESSION['surname'];
        
        destroy_session_and_data();
        
        echo "Welcome back $forename. <br>
            Your full name is $forename $surname.<br>
            Your username is '$username'
            and your password is '$password'.";
    }
    
    else echo "Please <a href='authenticate2.php'>Click here</a> to log in.";
    
    function destroy_session_and_data()
    {
        $_SESSION = array();
        setcookie(session_name(), '', time() - 2592000,'/');
        session_destroy();
    }
?>

When I type the website in i first get prompt to enter my password, when I am authenticated the webpage says: You are now logged in click here to continue. When I do I am directed to another page which confirms that I am still logged in. Then I press refresh and the webpage asks me to "Click here to log in". I do, but it doesn't ask me for my password again. Why? My personal info should be destroyed.

Thank you for responding. It's greatly appreciated

ok... I'm still struggling with PHP syntax, my editor's linting keeps flagging a line as incorrect. it's supposed to read as " when d1 minus 1 is less than or equal to d2 with d2 being less than or equal to d1 plus 1" so in other words its supposed to be true if d2 is between d1 minus 1 and d1 plus 1, inclusive. I don't want d2 being the previous number, the same number or the next number relative to d1. The same goes for d3, d4, and d5 (4 and 5 are un coded because why code in errors).

That being said... This isn't exactly my correct goal but I'm not sure how to code what I really want...
Rules
a 3 - 5 digit combo (0 - 99 per digit) whe
1. the numbers are not in order. (1,2,3,4 or 55,56,57,58,59 or 4,3,2,1 or 59,58,57,56,55)
2. no more than 2 numbers in the combo may be the same. (45,12,67,12,78 is ok 17,35,17,24,17 is not)
3. repeat numbers may not occur next to each other (45,12,67,12,78 = valid 45,67,12,12,78 = invalid)

I can't seem to find a good way to test this without the commands I know from other languages like CountIf, Iffn and RandSamp. (those are Ti-Basic commands)

I know "please do it for me" is frowned upon, and hate saying it (I'd rather learn to do it myself), but if anyone can explain how to do this I'd really appreciate it.