<?php
//
// Global functions of useful code
//


//
// year_calc
//   - added 2007-02-08 (MWF)
//
// Calculates a person's age or anniversary number given
// a start date and an optional anniversary date.  If no
// anniversary date is given it will use today's date.
//
// If called with a person's birth date it will return their
// current age.
//
if (!function_exists('year_calc')) {
   function year_calc($start_date,$anniversary_date="") {
      list($year,$month,$day) = explode("-",$start_date);

      if ($anniversary_date) list($year1,$month1,$day1) = explode("-",$anniversary_date);
      else list($year1,$month1,$day1) = explode("-",date("Y-m-d",time()));

      $year_diff  = $year1 - $year;
      $month_diff = $month1 - $month;
      $day_diff   = $day1 - $day;

      if ($month_diff < 0) $year_diff--;
      elseif (($month_diff==0) && ($day_diff < 0)) $year_diff--;

      return $year_diff;
   }
}


//
// date_difference
//  - added 2007-05-09
//
// Same as above but this function returns an array of values
// -> years
// -> months
// -> days
// -> total_months
// -> total_days
//
//// if (!function_exists('date_difference')) {
////   function date_difference($start_date,$anniversary_date="") {
////      list($year,$month,$day) = explode("-",$start_date);
////
////      if ($anniversary_date) list($year1,$month1,$day1) = explode("-",$anniversary_date);
////      else list($year1,$month1,$day1) = explode("-",date("Y-m-d",time()));
////
////      $year_diff  = $year1 - $year;
////      $month_diff = $month1 - $month;
////      $day_diff   = $day1 - $day;
////
////      if ($month_diff < 0) {
////         $year_diff--;
////         $month_diff = 12 + $month_diff;
////      }
////      elseif (($month_diff==0) && ($day_diff < 0)) {
////         $year_diff--;
////      }
////
////      return $year_diff;
////   }
////}


//
// html
//  - added 2007-05-09
//
// Convert a string of text so that all applicable characters are HTML entities
//
if (!function_exists('html')) {
   function html($text) {
      return htmlentities(stripslashes($text));
   }
}


//
// parseEmailText
//  - added 2007-05-09
//
// Perform value replacement on all variables in a block of text.  The set of
// values to replace is passed as an array and the array indices are the variables..
//
if (!function_exists('parseEmailText')) {
   function parseEmailText($message, $vals) {
      $msg = $message;
      foreach ($vals as $name => $value) {
         $msg = eregi_replace("\[{$name}\]", $value, $msg);
         $msg = eregi_replace("\{{$name}\}", $value, $msg);
      }
      return nl2br(trim($msg));
   }
}


//
// timeToEnglish
// - added 2007-05-09
//
// Convert a time value (seconds since midnight) to an English value of hours and minutes
//
if (!function_exists('timeToEnglish')) {
   function timeToEnglish($time, $hr24=0, $ampm=0) {
      $hr = floor($time / 60);
      if (!$hr24) {
         $hr = $hr % 12;
         if ($hr == 0) $hr = 12;
      }
      else {
         if ($hr < 10) $hr = "0" . $hr;
      }

      $min = $time % 60;
      if ($min < 10) $min = "0" . $min;
      $t = "{$hr}:{$min}";

      if ($ampm) {
         if ($time < 12*60) {
            $t .= " am";
         }
         else {
            $t .= " pm";
         }
      }
      return $t;
   }
}


?>