<?php
/*Next Level*/
$host = "localhost"; // MySQL Host
$db = "rank2"; // Database name
$username = "root"; // MySQL User
$password = "pass"; // Password
$connect=@mysql_connect($host,$username,$password);
$select=@mysql_select_db($db,$connect);
$sql=mysql_query("SELECT * from user Where uuid LIKE '%$unid%'");
$resultnum = mysql_num_rows($sql);
if($resultnum <= 0){
}else{
$sql = mysql_query("SELECT * FROM user WHERE uuid ='$unid'");
while($row = mysql_fetch_object($sql)){
$nextup = $row->nextup;
$start_date = new DateTime('@0');
$since_start = $start_date->diff(new DateTime("@$nextup"));
$date1 = new DateTime('@0');
$date2 = new DateTime("@$nextup");
$diff = $date1->diff($date2, true);
echo $diff->format('%m month %d days %H hours %I minutes %S seconds');}
}

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please check line 9,13
what is wrong
what is wrong