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Count days until date

/ Published in: PHP
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I made this script to count the days until a birthday, the birthdays are stored in mysql with the year intact YYYY-MM-DD, so this function strips the first 4 chars, and adds the current year, if the date has already passed it adds the next year and counts for that.

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  1. function countdays($d)
  2. {
  3.  $olddate =  substr($d, 4);
  4.  $newdate = date(Y) ."".$olddate;
  5.  $nextyear = date(Y)+1 ."".$olddate;
  6.  
  7.     if($newdate > date("Y-m-d"))
  8.     {
  9.     $start_ts = strtotime($newdate);
  10.     $end_ts = strtotime(date("Y-m-d"));
  11.     $diff = $end_ts - $start_ts;
  12.     $n = round($diff / 86400);
  13.     $return = substr($n, 1);
  14.     return $return;
  15.     }
  16.     else
  17.     {
  18.     $start_ts = strtotime($nextyear);
  19.     $end_ts = strtotime(date("Y-m-d"));
  20.     $diff = $end_ts - $start_ts;
  21.     $n = round($diff / 86400);
  22.     $return = substr($n, 1);
  23.     return $return;
  24.  
  25.     }
  26.  
  27. }

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