简单的php奥运倒计时牌

1 <?php
 2 
 3 date_default_timezone_set ( "Asia/Shanghai" );
 4 $kaimu = mktime ( 4, 0, 0, 07, 28, 2012 );
 5 //echo date ( "Y-m-d H:i:s", $kaimu );
 6 //echo "<br/>";
 7 //echo date ( "Y-m-d H:i:s", time () );
 8 $timecha = $kaimu - time ();
 9 
10 mkdaojishi ( $timecha );
11 function mkdaojishi($timecha) {
12     $miao = $timecha % 60;
13     $fen = floor ( $timecha / 60 );
14     
15     if ($fen > 60) {
16         $shi = floor ( $fen / 60 );
17         $fen=$fen%60;
18     }
19     
20     if ($miao<10){$miao="0".$miao;}
21 if ($fen<10){$fen="0".$fen;}
22 if ($shi<10){$shi="0".$shi;}
23 $dangqian=date("Y-m-d H:i:s",time());
24     echo "当前时间：$dangqian,<b>距伦敦奥运会开幕还有：<font color='red'>$shi:$fen:$miao</font></b>";
25 }
26 
27 ?>