I can't figure out why this code doesn't work. No error messages. Page loads.
Code: <?php # Script 3.9 - calculator.php
$page_title = 'Widget Cost Calculator';
include ('./header.html');
function calculate_total ($tax= 5) {
global $total;
$taxrate = $tax / 100;
$total = ($_POST['quantity'] * $_POST['price']) * ($taxrate + 1);
$total = number_format ($total, 2);
}
if (isset($_POST['submitted'])) {
if (is_numeric($_POST['quantity']) && is_numeric($_POST['price'])) {
echo '<h1 id="mainhead">Total Cost</h1>';
$total = NULL;
if (is_numeric($_POST['tax'])) {
calculate_total ($_POST['tax']);
} else {
calculate_total ();
}
echo '<p>The total cost of purchasing '. $_POST['quantity'] .' widget(s) at $'.
number_format ($_POST['price'], 2). ' each is $'. $total .'.</p>';
echo '<p><br/></p>';
} else {
echo '<h1 id="mainhead">Error!</h1>
<p class="error">Please enter a valid quantity and price.</p><p><br/></p>';
}
}
?>
<h2>Widget Cost Calculator</h2>
<form action="calculator.php" method="post">
<p>Quantity: <input type="text" name="quantity" size="5" maxlength="10" value="<?php if (isset($_POST['quantity'])) echo $_POST['quantity'];?>"/></p>
<p>Price: <input type="text" name="price" size="5" maxlength="10" value="<?php if (isset($_POST['price'])) echo $_POST['price'];?>"/></p>
<p>Tax (%): <input type="text" name="tax" size="5" maxlength="10" value="<?php if (isset($_POST['tax'])) echo $_POST['tax'];?>"/>(optional)</p>
<p><input type="submit" name"submit" value="Calculate!"/></p>
<input type="hidden" name"submitted" value="TRUE"/>
</form>
<?php
include ('./footer.html');
?>The calculator does not work and won't display anything. I've checked the code three times in the text book and I believe their is no typo's. What am I doing wrong?
MySql timezone
Code: $sql = "SELECT *, date_format(date, '%m/%d/%Y at %I:%i %p' )as date FROM comments WHERE tutorialid='1' ORDER BY commentid DESC LIMIT $offset, $rowsperpage";Can I change the timezone
Displaying image pathname instead of image
HelloIm trying to upload and then display images from a mysql database - Its only basic and i only need one pic per user on the database hence why using mysqlI really need osme help as ive been going
calendar dates and hours compare problem
i have a calendar in wordpress, everything works great except that i can make 2 meetings at the same date, time and room without receiving any error i don't know where to start to compare the days
str_replace help
I am thinking str_replace is my only option to filter outputs from my database to convert them to safe url variables.I am working with a database with over 4million records, and apparently when the
php + mysql count consecutive data
I have a database of values and I want to work out how to display them if the values match a consecutive pattern.For example, I might have the table "eggs" with the values "1",
fopen() security
As i understood the usage of fopen() for it to function correctly the Dir you write to has to be rw enabled for the php group, so that fopen() can acces the Dir to write to it. When I try to write
sql problems
I am having a small problem with my sql statement. it is inserting into 4 of the fields. fields it is inserting into:FirstLastemailpasswordit is saying the record has been added. is there something
ereg_replace in Wordpress
Heya - so I'm working on this site: http://world-of-smiles.theportlandco.com/new-patientsThe site is built off Wordpress and I'm getting the pages title using Wordpress function: Line number On/Off |
Comment Mod System Effects all rows...
Sorry if its confusing but here is whats going on: I have a table in a database called comments and there are alot of entries there but can manually be marked flagged with a 1. nevermind how that is
Custom array sort? asc then desc
Any ideas how I could sort this array? I've been trying for a while. Maybe with usort, but I have no idea how... Each entry is laid out like this: ("$status||$id||$shop||$name||$date")I