header('Content-type: text/html; charset=utf-8');
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<b>Warning</b>:  Cannot modify header information - headers already sent by (output started at /home/artefebr/public_html/webdesign/midia/index.php:2) in <b>/home/artefebr/public_html/webdesign/midia/index.php</b> on line <b>4</b><br />