禁止PHP缓冲的好办法

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$GLOBALS['now'] = gmdate(‘D, d M Y H:i:s’) . ‘ GMT’;
header(‘Expires: 0′); // rfc2616 – Section 14.21
header(‘Last-Modified: ‘ . $GLOBALS['now']);
header(‘Cache-Control: no-store, no-cache, must-revalidate, pre-check=0, post-check=0, max-age=0′); // HTTP/1.1
header(‘Pragma: no-cache’); // HTTP/1.0