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Remove a cookie

When I want to remove a Cookie I try unset($_COOKIE[‘hello’]); I see in my cookie browser from firefox that the cookie still exists. How can I really remove the cookie?

Serial comm with PHP on Windows

I am looking for a way to communicate with RS232 serial COM port on windows. I have found 2 solutions on the net, one which is not totally free (introduces deliberate delays on the function) and …

Select from MySQL records that sums

I’m using PHP and MySQL. I have a table named quantity. Inside there are records of product name, product price and product quantity. Besides these, there are a few others that helps me select the last records based on date and position, as well as a GROUP BY the field named price because there are diff…