Use of Constants in HTML

[Mig]

How do I use constants in the HTML itself? I mean I have found plenty of usage of constants within PHP scripts themselves but can I use them to build a link, for example (directly in <a href="">)?

Would I need to do use php tags within the href to do so? I have seen in phpBB for example, that constants get used in the HTML templates like:

<a href="DIR_ROOT">Home</a>

But it didn't seem to work when I did it.

Any tips or good links?

[jogol]

first define a variable and then insert it like this:

<a href="<?php echo $variable;?>">Home</a>

make sure the html file has a .php ending

[bokeh]

You can't access contants from within a quoted string literal. Use concatenation.

[Mig]

You can't access contants from within a quoted string literal. Use concatenation.

In what way? Example please?

I mean I want to define constants for the root, the stylesheet, includes, etc.

If I create all constants in a separate file, does that script need to be run to define the constants? If so, how do I include that file, considering my constant for the root directory for example won't have been defined yet?

[felgall]

<a href="<?php echo DIR_ROOT ?>">Home</a>