use locale;

The ultimate secret to locales: "Avoid"

My guess is that your "web user" is not running under whatever "locale" you assume. I would specify the script encoding explicitly using encoding:

use encoding "greek"; # or whatever

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In reply to Re: Confusing UTF-8 bug in CGI-script by Corion
in thread Confusing UTF-8 bug in CGI-script by wanradt

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