<?php
// Set array parts
$a = array("1" => "one", "2" => "two");
$b = array("a" => "aye", "b" => "bee");
$c = array("a scalar", $a, $b);

// Extract a sub-element from an array in the...

Or, in plain English, you are overwriting the result of your SELECT query with the result of your DELETE query, which is not suitable for fetching rows from. Thus your script ABENDs at the top of the...

I tripped on this a few times myself, early on.

As you have discovered, there's a strict order in which data are to be sent to the browser. Headers first, then the HTML. It isn't that 'the header...

If your table has exactly one row in it and it has exactly one field, you can simply$query_string = "UPDATE my_table SET my_column='$item'";
mysql_query($query_string) or die ...
This will update...

You should go to PayPal's dev site and see how to do it properly. They have a method by which your site receives the form data, processes it, then sends the user off to PayPal with a transaction...

Will it help if I shout?

DELETE THE LINE WHERE YOU CALL MYSQL_FETCH_ASSOC()! IT IS EATING THE FIRST ROW RETURNED. IT IS THE LINE RIGHT ABOVE THE LINE WHERE YOU CALL MYSQL_NUM_ROWS()! DELETE THE...

Let me try again. If there is only one matching row in the database, the mysql_fetch_assoc() function grabs it, leaving nothing for your while loop to do. If there is more than one matching row, your...

Are you missing the connect statement, like:$link = mysql_connect('localhost', 'mysql_user', 'mysql_password');

And why are you fetching data into an associative array via mysql_fetch_assoc() and...

In short, "WHERE field=value", you should have "value" inside single quotes ('). I stubbed my toes on this many times until I learned to put the value in quotes. Unless it was a function, of course.