Arus

Created a page that is html encoded to be Japanese Shift-JIS , but for some reason, the page is rendering the browser as Japanese EUC. The page is used to display ranks drawn from data files that users submit to. This is only happening on pages that are php; the rest of the files on my server (html) are showing up fine in the browser. What would cause the php pages to cause the browsers (tested this in firefox 2.0 , firefox 1.5, IE 6 and IE 7, Opera and an old version of Netscape), to rever to EUC instead of picking up the encoding for Shift-JIS?