Finally switching from Classic ASP to PHP...help with the real basics needed!

Thanks for the advice Jason. My concern with switching to PHP is that it, too, will, eventually, be withdrawn. I know there are no guarantees, but what are your predictions for the future with regard to programming languages?

With regard to the code example you've given, when I drop that into my page it doesn't load. :o(
Unlike Classic ASP, PHP doesn't appear to deliver an error message. :o(
http://www.jmckeown.co.uk/quotation-electrical-work.php

Here's what I'm using:

<?php if((isset($_GET['formerror']))?$_GET['formerror']:"" == "1" { ?>
<div id="errorbox">
<strong>FORM ERROR</strong><br />
There was an error with the data you have attempted to submit. Please ensure that you complete all of the form fields below and also that you do not enter incorrect information or special characters, for example entering a telephone number in the name field will cause this error to occur.<br /><br />If you have double checked your details and you are still receiving this error please call 01671 4043755.
</div>
<?php } ?>

Thank you.
NJ