PHP website shows question marks insted of utf-8 characters although in Netbeans it's saved in utf-8 -

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i have php website written in netbeans. contains meta: 

<meta charset="utf-8" />

and header:

<?php header('content-type: text/html; charset=utf-8'); ?>

also 3 other php files responsible changing language of site contains header. i've found here information due netbeans not saving files in utf-8. added 

-j-dfile.encoding=utf-8

in netbeans_default_options in netbeans.conf file. problem still exists. can problem now? website looked ok, when html. after adding posibility of changing language question marks started show.


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