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   1  <?php
   2  /* 

   3   * phpMyVisites : website statistics and audience measurements

   4   * Copyright (C) 2002 - 2006

   5   * http://www.phpmyvisites.net/ 

   6   * phpMyVisites is free software (license GNU/GPL)

   7   * Authors : phpMyVisites team

   8  */
   9  
  10  // $Id: Date.class.php 29 2006-08-18 07:35:21Z matthieu_ $

  11  
  12  
  13  /**

  14   * Class generic used for all date in the format YYYY-MM-DD

  15   */
  16  class Date {
  17      
  18      /**

  19       * @var array 

  20       */
  21      var $info;
  22          
  23      /**

  24       * Constructor 

  25       * 

  26       * @param string $s_date

  27       */
  28  	function Date($s_date)
  29      {
  30          $s_date = $this->getValidDate($s_date);
  31          $this->loadInfo($s_date);        
  32      }    
  33      
  34  	function getValidDate($s_date)
  35      {
  36          if( strlen($s_date) === 10
  37              && ($e = explode('-', $s_date)) 
  38              && sizeof($e) === 3
  39              && strlen($e[0]) === 4
  40              && is_numeric($e[0])
  41              && strlen($e[1]) === 2
  42              && is_numeric($e[1])
  43              && strlen($e[2]) === 2
  44              && is_numeric($e[2])
  45          )
  46          {
  47              return $s_date;
  48          }
  49          else
  50          {
  51              return getDateFromTimestamp(time());
  52          }
  53      } 
  54      
  55  	function loadInfo($s_date)
  56      {
  57          $this->date = $s_date;
  58          $this->info = $this->getInfo();
  59      }
  60      /**

  61       * returns date info array

  62       * 

  63       * @access private

  64       * @return array

  65       */
  66  	function getInfo()
  67      {
  68          $d = explode('-', $this->date);
  69          $timestamp = mktime(23,59,59, $d[1], $d[2], $d[0]);
  70          $week = date("W", $timestamp);
  71          $weekDayNumber = date("w", $timestamp);
  72          return array('year'=>$d[0], 'month'=>$d[1], 'day'=>$d[2], 'timestamp'=>$timestamp, 'week'=>$week,
  73                  'weekDayNumber'=>$weekDayNumber);
  74      }
  75  
  76  	function setTimestamp($ts)
  77      {
  78          $this->loadInfo(getDateFromTimestamp($ts));
  79      }
  80      
  81  	function setDate($s_date)
  82      {
  83          $this->loadInfo($s_date);
  84      }
  85      
  86  	function getWeekDayNumber()
  87      {
  88          return $this->info['weekDayNumber'];
  89      }
  90      
  91      /**

  92       * returns date YYYY-MM-DD

  93       * 

  94       * @return string 

  95       */
  96  	function get()
  97      {
  98          return $this->info['year']."-".$this->info['month']."-".$this->info['day'];
  99      }    
 100      
 101      /**

 102       * returns timestamp

 103       * 

 104       * @return string 

 105       */
 106  	function getTimestamp()
 107      {
 108          return $this->info['timestamp'];
 109      }
 110  
 111      /**

 112       * returns day

 113       * 

 114       * @return string

 115       */
 116  	function getDay()
 117      {
 118          return $this->info['day'];
 119      }    
 120      
 121      /**

 122       * returns month

 123       * 

 124       * @return string

 125       */
 126  	function getMonth()
 127      {
 128          return $this->info['month'];
 129      }
 130      
 131      /**

 132       * returns year

 133       * 

 134       * @return string

 135       */
 136  	function getYear()
 137      {
 138          return $this->info['year'];
 139      }
 140      
 141      /**

 142       * returns ISO-8601 week number of year, weeks starting on Monday

 143       * 

 144       * @return string

 145       */
 146  	function getWeek()
 147      {
 148          return $this->info['week'];
 149      }
 150      
 151      /**

 152       * returns true if the period of the object calling this method is finished

 153       * 

 154       * @param int $period

 155       * 

 156       * @return bool

 157       */
 158  	function isPeriodFinished($period)
 159      {
 160          if($period === DB_ARCHIVES_PERIOD_DAY)
 161          {
 162              return $this->isDayFinished();
 163          }
 164          else if($period === DB_ARCHIVES_PERIOD_MONTH)
 165          {
 166              return $this->isMonthFinished();
 167          }
 168          else
 169          {
 170              print("Period asked in isPeriodFinished UNKNOWN<br>");
 171              return true;
 172          }
 173      }
 174      
 175      /**

 176       * returns true if day of period is older than today

 177       * 

 178       * @access private

 179       * @return bool

 180       */
 181  	function isDayFinished()
 182      {
 183          if($this->getTimestamp() < time())
 184          {
 185              return true;
 186          }
 187          else
 188          {
 189              return false;
 190          }
 191      }
 192      
 193      /**

 194      * returns true if month of period is older than current month

 195      * 

 196      * @access private

 197      * @return bool

 198      */
 199  	function isMonthFinished()
 200      {
 201          if($this->getYear() == date("Y") && $this->getMonth() >= date("m"))
 202          {
 203              return false;
 204          }
 205          else
 206          {
 207              return true;
 208          }
 209      }
 210       /**

 211       * Adds x days to date  

 212       * Works with daylight saving time

 213       */
 214  	 function addDays($nbDaysToAdd)
 215       {
 216         $this->setTimestamp(mktime(23, 59, 59, $this->info['month'] , $this->info['day'] + $nbDaysToAdd, $this->info['year']));
 217       }
 218  }
 219  ?>