proper way to strip backslashes from url

I need to know a proper, secure, and proficient way to strip not only front slashes but backslashes as well from a url.

the current code im working with is

define('DOMAIN', rtrim(rtrim($_SERVER['HTTP_HOST'], '/') . dirname($_SERVER['PHP_SELF']), '/'));

but it does not strip backslashes which might appear on wamp setups (windows systems)
redcableAsked:
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kevin_uCommented:
define('DOMAIN', rtrim(rtrim($_SERVER['HTTP_HOST'], '/\\') . dirname($_SERVER['PHP_SELF']), '/\\'));


That will strip trailing / or \... but I'm not sure if thats what you wanted.
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redcableAuthor Commented:
define('DOMAIN', rtrim(rtrim($_SERVER['HTTP_HOST'], '/\\') . dirname($_SERVER['PHP_SELF']), '/\\'));

ahh ok i was close. thanks any downside to doing it this way?
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kevin_uCommented:
I can't say there's a downside, unless I know what you are trying to accomplish.

What is DOMAIN used for in the rest of the script?

What if the PHP_SELF has back slashses embedded in it instead of just at the end?

A few examples would help me understand the question.

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