PHP in Templates and Template Conditionals

[dan4]

I added a plugin PHPtpl.php and there it works well.
This location url for this plugin:
Plugin phptpl

Thanks for your reply.

Well firstly, your PHP code isn't even valid.
It would be something like this, both for PHP and this plugin:

<?php $code="blablabla"; ?>
<a href="http://domain.com/index.php?<?php echo $code; ?>">link</a>