list($usec, $sec) = explode(" ", microtime());			//生成3位毫秒
$msec=sprintf("%03d", round($usec*1000)); 		//生成3位毫秒
//%03d 不足3位前面补0
echo date("YmdHis",$current_time).$msec;


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# xiaoxiao [ 2022-04-20 ]

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