have a problem with get_theme_url()

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When i use the function file_exsists($dirfile) it returns false. Why?

Because file_exists() needs a path to the file on the server, the browser need the URL where it can retrieve the file. The constants Carlos mention are paths on the server, something like "/public_html/data/other/", and $SITEURL as mentioned by Mike will return something like “http://example.ms/”.

I hope you understand the difference