下面以秒为单位显示时间,如果要以分钟为单位,如何转换为分钟?
$query = "SELECT * FROM messages WHERE ip = '$ip' AND mtime >= NOW() - INTERVAL 5 MINUTE ORDER by mtime DESC";
$result = mysql_query($query);
if (mysql_num_rows($result) > 0) {
$row = mysql_fetch_assoc($result);
$diff = microtime(true) - $row['mtime']; //here the time difference between last sended message and this try
$remaining = (5*60 - (int) $diff);
echo $remaining;
}
else {
...
}
谢谢。
一(1)分钟内有六十(60)秒。要将秒转换为分钟,只需将秒数除以六十(60)即可。
$tstart = (string) microtime(true); // casting to string shows type doesn't matter
sleep(3); // for variance
$tstop = microtime(true);
$diffSeconds = round($tstop-$tstart);
$diffMinutes = ceil($diffSeconds/60); // here is the division
echo $diffSeconds.'second'.($diffSeconds==1?'':'s')."'n"; // assuming plain text out
echo $diffMinutes.'minute'.($diffMinutes==1?'':'s')."'n";
输出:
以秒为单位:3.0001471042633
分钟:0.050002451737722