From 5176f5d77f6b541776dcaa11f06e11fc19d70d89 Mon Sep 17 00:00:00 2001
From: zhujinyong <zhujinyong@cnezsoft.com>
Date: Mon, 7 Jan 2013 05:50:18 +0000
Subject: [PATCH]  + add date class.

---
 lib/date/date.class.php | 249 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 249 insertions(+)
 create mode 100644 lib/date/date.class.php

diff --git a/lib/date/date.class.php b/lib/date/date.class.php
new file mode 100644
index 0000000000..e45e5f653c
--- /dev/null
+++ b/lib/date/date.class.php
@@ -0,0 +1,249 @@
+<?php
+/**
+ * The date class file of ZenTaoPHP framework.
+ *
+ * The author disclaims copyright to this source code.  In place of
+ * a legal notice, here is a blessing:
+ * 
+ *  May you do good and not evil.
+ *  May you find forgiveness for yourself and forgive others.
+ *  May you share freely, never taking more than you give.
+ */
+/**
+ * Date class.
+ * 
+ * @package framework
+ */
+class date 
+{
+    /**
+     * Build hour time list.
+     * 
+     * @param  int $begin 
+     * @param  int $end 
+     * @param  int $delta 
+     * @access public
+     * @return array
+     */
+    public static function buildTimeList($begin, $end, $delta)
+    {
+        $times = array();
+        for($hour = $begin; $hour <= $end; $hour ++)
+        {
+            for($minutes = 0; $minutes < 60; $minutes += $delta)
+            {
+                $time  = sprintf('%02d%02d', $hour, $minutes);
+                $label = sprintf('%02d:%02d', $hour, $minutes);
+                $times[$time] = $label;
+            }
+        }
+        return $times;
+    }
+
+    /**
+     * Get today.
+     * 
+     * @access public
+     * @return date
+     */
+    public static function today()
+    {
+        return date(DT_DATE2, time());
+    }
+
+    /**
+     * Get yesterday 
+     * 
+     * @access public
+     * @return date
+     */
+    public static function yesterday()
+    {
+        return date(DT_DATE1, strtotime('yesterday'));
+    }
+
+    /**
+     * Get tomorrow.
+     * 
+     * @access public
+     * @return date
+     */
+    public static function tomorrow()
+    {
+        return date(DT_DATE1, strtotime('tomorrow'));
+    }
+
+    /**
+     * Get the day before yesterday.
+     * 
+     * @access public
+     * @return date
+     */
+    public static function twoDaysAgo()
+    {
+        return date(DT_DATE1, strtotime('-2 days'));
+    }
+
+    /**
+     * Get now time period.
+     * 
+     * @param  int    $delta 
+     * @access public
+     * @return string the current time period, like 0915
+     */
+    public static function now($delta = 10)
+    {
+        $range  = range($delta, 60 - $delta, $delta);
+        $hour   = date('H', time());
+        $minute = date('i', time());
+
+        if($minute > 60 - $delta)
+        {
+            $hour += 1;
+            $minute = 00;
+        }
+        else
+        {
+            for($i = 0; $i < $delta; $i ++)
+            {
+                if(in_array($minute + $i, $range))
+                {
+                    $minute = $minute + $i;
+                    break;
+                }
+            }
+        }
+
+        return sprintf('%02d%02d', $hour, $minute);
+    }
+
+    /**
+     * Format time 0915 to 09:15
+     * 
+     * @param  string $time 
+     * @access public
+     * @return string
+     */
+    public static function formatTime($time)
+    {
+        if(strlen($time) != 4 or $time == '2400') return '';
+        return substr($time, 0, 2) . ':' . substr($time, 2, 2);
+    }
+
+    /**
+     * Get the begin and end date of this week.
+     * 
+     * @access public
+     * @return array
+     */
+    public static function getThisWeek()
+    {
+        $baseTime = self::getMiddleOfThisWeek();
+        $begin = date(DT_DATE1, strtotime('last monday', $baseTime)) . ' 00:00:00';
+        $end   = date(DT_DATE1, strtotime('next sunday', $baseTime)) . ' 23:59:59';
+        return array('begin' => $begin, 'end' => $end);
+    }
+
+    /**
+     * Get the begin and end date of last week.
+     * 
+     * @access public
+     * @return array
+     */
+    public static function getLastWeek()
+    {
+        $baseTime = self::getMiddleOfLastWeek();
+        $begin = date(DT_DATE1, strtotime('last monday', $baseTime)) . ' 00:00:00';
+        $end   = date(DT_DATE1, strtotime('next sunday', $baseTime)) . ' 23:59:59';
+        return array('begin' => $begin, 'end' => $end);
+    }
+
+    /**
+     * Get the time at the middle of this week.
+     * 
+     * If today in week is 1, move it one day in future. Else is 7, move it back one day. To keep the time geted in this week.
+     *
+     * @access public
+     * @return time
+     */
+    public static function getMiddleOfThisWeek()
+    {
+        $baseTime = time();
+        $weekDay  = date('N');
+        if($weekDay == 1) $baseTime = time() + 86400;
+        if($weekDay == 7) $baseTime = time() - 86400;
+        return $baseTime;
+    }
+
+    /**
+     * Get middle of last week 
+     * 
+     * @access public
+     * @return time
+     */
+    public static function getMiddleOfLastWeek()
+    {
+        $baseTime = time();
+        $weekDay  = date('N');
+        $baseTime = time() - 86400 * 7;
+        if($weekDay == 1) $baseTime = time() - 86400 * 4;  // Make sure is last thursday.
+        if($weekDay == 7) $baseTime = time() - 86400 * 10; // Make sure is last thursday.
+        return $baseTime;
+    }
+
+    /**
+     * Get this month begin and end time
+     * 
+     * @access public
+     * @return array
+     */
+    public static function getThisMonth()
+    {
+        $begin = date('Y-m') . '-01 00:00:00';
+        $end   = date('Y-m', strtotime('next month')) . '-00 23:59:59';
+        return array('begin' => $begin, 'end' => $end);
+    }
+
+    /**
+     * Get last month begin and end time
+     * 
+     * @access public
+     * @return array
+     */
+    public static function getLastMonth()
+    {
+        $begin = date('Y-m', strtotime('last month')) . '-01 00:00:00';
+        $end   = date('Y-m', strtotime('this month')) . '-00 23:59:59';
+        return array('begin' => $begin, 'end' => $end);
+    }
+
+    public static function getThisSeason()
+    {
+        $year  = date("Y-");
+        $month = date("n");
+        if($month % 3)
+        {
+            $seasonBegin = $month - ($month % 3) + 1;
+            $seasonEnd   = $seasonBegin + 3;
+        }
+        else
+        {
+            $seasonEnd   = $month + 1;
+            $seasonBegin = $seasonEnd - 3;
+        }
+
+        if(strlen($seasonBegin) == 1) $seasonBegin = "0$seasonBegin";
+        if(strlen($seasonEnd) == 1)   $seasonEnd   = "0$seasonEnd";
+        $begin = $year . $seasonBegin;
+        $end   = $year . $seasonEnd;
+
+        return array('begin' => $begin, 'end' => $end);
+    }
+
+    public static function getThisYear()
+    {
+        $begin = date(DT_DATE1, strtotime('1/1 this year'));
+        $end   = date(DT_DATE1, strtotime('1/1 next year -1 day'));  
+        return array('begin' => $begin, 'end' => $end);
+    }
+}