remove sms unsupported characters

is there any preg or str_replace that can help me remove characters from a string that are not supported on sms in ph开发者_StackOverflow中文版ones. Now accented characters are shown as yy in sms.

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You probably want to transliterate those chars.

This will convert an accented ñ to a plain n.

Here is useful further reading on Stack Overflow.