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Problem with PHP. Same value always showing up

system32

By system32
in PHP Coding Help

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system32 Newbie

system32

Posted
Posted

Hello. I am currently learning PHP and have been working on this exercise. I want to to calculate the total order amount and add the provincial sales tax to it. For some reason almost every time I calculate the total amount it is always using the 13% sales tax. What am I doing wrong? Any help would be greatly appreciated. This is my code:

 

HTML:

<html>
<head>

<script language="javascript" type="text/javascript">

function checkForm()
{
	var errMessage = "";
	var myForm = document.orderForm;


	if (myForm.firstName.value == "")
	{
		errMessage += "\nPlease enter your first name";
	}
	if (myForm.lastName.value == "")
	{
		errMessage += "\nPlease enter your last name";
	}
	if (myForm.address.value == "")
	{
		errMessage += "\nPlease enter a valid address";
	}
	if (myForm.city.value == "")
	{
		errMessage += "\nPlease enter a valid city";
	}
	if (myForm.province.value == "one")
	{
		errMessage += "\nPlease select a province";
	}
	if (myForm.postalCode.value == "")
	{
		errMessage += "\nPlease enter a valid postal code";
	}
	if (myForm.purchaseItem.value == "")
	{
		errMessage += "\nPlease select an item to purchase";
	}
	if (myForm.quantity.value == "")
	{
		errMessage += "\nPlease enter a quantity amount";
	}
	if (isNaN(myForm.quantity.value))
	{
		errMessage += "\nPlease enter a valid quantity amount";
	}


	if (errMessage != "")
	{
		alert (errMessage);
		return false;
	}
	return true;
}

</script>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Untitled Document</title>
</head>

<body>
<form id="orderForm" name="orderForm" method="post" onSubmit="return checkForm()" action="exercise.php" >
  <table width="619" height="169" border="0">
    <tr>
      <td width="94" height="26">First Name:</td>
      <td width="205"><label>
        <input name="firstName" type="text" id="firstName" />
      </label></td>
      <td width="168">Item To Be Purchased:</td>
      <td width="124"><label>
        <select name="purchaseItem" id="purchaseItem">
        <option value="">Select Item</option>
          <option value="video">Video Card</option>
          <option value="case">Computer Case</option>
          <option value="cpuFan">CPU Fan</option>
          <option value="caseFan">Case Fan</option>
          <option value="keyboard">Keyboard</option>
          <option value="mouse">Mouse</option>
        </select>
      </label></td>
    </tr>
    <tr>
      <td height="26">Last Name:</td>
      <td><label>
        <input type="text" name="lastName" id="lastName" />
      </label></td>
      <td>Quantity:</td>
      <td><label>
        <input name="quantity" type="text" id="quantity" maxlength="3" />
      </label></td>
    </tr>
    <tr>
      <td height="26">Address:</td>
      <td><input type="text" name="address" id="address" /></td>
      <td>Extra:</td>
      <td><label>
        <input type="checkbox" name="ram" id="ram" />
      RAM<br />
      <input type="checkbox" name="cpu" id="cpu" />
      CPU      <br />
      </label></td>
    </tr>
    <tr>
      <td height="26">City:</td>
      <td><label>
        <input type="text" name="city" id="city" />
      </label></td>
      <td> </td>
      <td> </td>
    </tr>
    <tr>
      <td height="26">Province:</td>
      <td><label>
        <select name="province" id="province">
        <option value="one">Please Select a Province</option>
          <option value="AB">Alberta</option>
          <option value="BC">British Columbia</option>
          <option value="MB">Manitoba</option>
          <option value="NB">New Brunswick</option>
          <option value="NL">Newfoundland and Labrador</option>
          <option value="NWT">Northwest Territories</option>
          <option value="NS">Nova Scotia</option>
          <option value="NU">Nunavut</option>
          <option value="ON">Ontario</option>
          <option value="PEI">Prince Edward Island</option>
          <option value="QC">Quebec</option>
          <option value="SK">Saskatchewan</option>
          <option value="YT">Yukon</option>
        </select>
      </label></td>
      <td> </td>
      <td> </td>
    </tr>
    <tr>
      <td height="23">Postal Code:</td>
      <td><label>
        <input type="text" name="postalCode" id="postalCode" />
      </label></td>
      <td><label>
        <div align="center">
          <input type="reset" name="reset" id="reset" value="Reset" />
        </div>
      </label></td>
      <td><label>
        <input type="submit" name="submit" id="submit" value="submit"/>
      </label></td>
    </tr>
  </table>
</form>
</body>
</html>

 

PHP:

<?php

$firstName = $_POST["firstName"];
$lastName = $_POST["lastName"];
$address = $_POST["address"];
$city = $_POST["city"];
$province = $_POST["province"];
$postalCode = $_POST["postalCode"];
$item = $_POST["purchaseItem"];
$quantity = $_POST["quantity"];
$operatingSystem = $_POST["operatingSystem"];
$itemCost;
$salesTax;
$shippingCharge;
$delivery;


print ("<br> <br>");
print ("Shipping To: $lastName, $firstName <br>");
print ("$address <br>");
print ("$city, $province <br>");
print ("$postalCode <br>");
print ("<br> <br>");


if ($item == "video")
{
	$itemCost = 350;
}
elseif ($item == "case")
{
	$itemCost = 55;
}
elseif ($item == "cpuFan")
{
	$itemCost = 18;
}
elseif ($item == "caseFan")
{
	$itemCost = 12;
}
elseif ($item == "keyboard")
{
	$itemCost = 28;
}
else
{
	$itemCost = 14;
}



if ($province == "AB")
{
	$salesTax = 0.05;
}
elseif ($province == "BC")
{
	$salesTax = 0.12;
}
elseif ($province == "MB")
{
	$salesTax = 0.12;
}
elseif ($province == "NB")
{
	$salesTax = 0.13;
}
elseif ($province == "NL")
{
	$salesTax = 0.13;
}
elseif ($province == "NS")
{
	$salesTax = 0.13;
}
elseif ($province = "ON")
{
	$salesTax = 0.13;
}
elseif ($province = "PEI")
{
	$salesTax = 0.155;
}
elseif ($province = "QC")
{
	$salesTax = 0.12875;
}
elseif ($province = "SK")
{
	$salesTax = 0.10;
}
else
{
	$salesTax = 0;
}



$totalItemCost = ($itemCost * $quantity);
$totalTaxItem = ($totalItemCost * $salesTax) + $totalItemCost;

if ($totalTaxItem <= 25)
{
	$shippingCharge = 3;
	$delivery = 1;
}
elseif ($totalTaxItem > 25 && $totalTaxItem <= 50)
{
	$shippingCharge = 4;
	$delivery = 1;
}
elseif ($totalTaxItem > 50 && $totalTaxItem <= 75)
{
	$shippingCharge = 5;
	$delivery = 3;
}
else
{
	$shippingCharge = 6;
	$delivery = 4;
}


$totalOrderCost = $totalTaxItem + $shippingCharge;
        $totalSaleTax = $salesTax * 100;

print ("Order Information: <br>");
print ("Item Cost: $$itemCost <br>");
print ("Quantity: $quantity <br>");
print ("Tax: $totalSaleTax %<br>");
print ("Delivery Charge: $$shippingCharge <br>");
print ("Total Order Is: $$totalOrderCost <br>");
print ("Shipping: $delivery buisness day(s) <br>");

?>

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