时间格式化
//格式化时间
function format_date($beforetime)
{
$time= time() - $beforetime;
$today=strtotime(date("M-d-y",mktime(0,0,0,date("m"),date("d"),date("Y"))));
if($time =60 && $time$today){
$return="今天 ".date("H:i",$beforetime);
}elseif($beforetime($today-86400)){
$return="昨天 ".date("H:i",$beforetime);
}else{
$return=date("Y-m-d H:i",$beforetime);
}
}
return $return;
}










