How to get time difference in milliseconds

Posted by jason45 on Stack Overflow See other posts from Stack Overflow or by jason45
Published on 2011-01-17T16:10:03Z Indexed on 2011/01/17 16:53 UTC
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Hi, I can't wrap my brain around this one so I hope someone can help. I have a song track that has the song length in milliseconds. I also have the date the song played in DATETIME format. What I am trying to do is find out how many milliseconds is left in the song play time.

Example

$tracktime = 219238;  
$dateplayed = '2011-01-17 11:01:44';  
$starttime = strtotime($dateplayed);

I am using the following to determine time left but it does not seem correct.

$curtime = time();   
$timeleft = $starttime+round($tracktime/1000)-$curtime;  

Any help would be greatly appreciated.

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