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/**
*
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*
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*
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*
* echo udate('Y-M-D H:i:s.u'); 2010-Apr-Thu 19:40:49.484376
*
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*
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*
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*
* @author wulei
* @date
*
*/
function udate($format, $utimestamp = null)
{
if (is_null($utimestamp))
$utimestamp = microtime(true);
$timestamp = floor($utimestamp);
$milliseconds = round(($utimestamp - $timestamp) * 1000000);
return date(preg_replace('`(?<!\\\\)u`', $milliseconds, $format), $timestamp);
}
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