What case to use in HTTP headers?

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khipster2016-03-30 11:28:55

PHP

khipster, 2016-03-30 11:28:55

header('Content-Type: text/html; charset=UTF-8');
header('Content-Type: text/html; charset=utf-8');
header('Content-type: text/html; charset=utf-8');
header('content-type: text/html; charset=utf-8');

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Vanya Zyuzgin, 2016-03-30
@khipster

According to RFC 2616 , "Hypertext Transfer Protocol - HTTP/1.1", §4.2, "Message Headers": header name is case insensitive