#!/usr/bin/python
# -*- coding: utf-8 -*-
 
import time
from datetime import datetime, timedelta
 
# obj, text, timestamp(time)の相互変換
format = '%Y-%m-%d %H:%M:%S'
orig   = datetime(2009, 8, 10, 14, 53, 30)
text1  = orig.isoformat(' ')                          # obj  => txt
date1  = datetime.strptime(text1, format)             # txt  => obj
time1  = time.mktime(date1.timetuple())               # obj  => time
date2  = datetime.fromtimestamp(time1)                # time => obj
time2  = time.mktime(time.strptime(text1, format))    # txt  => time
text2  = datetime.fromtimestamp(time2).isoformat(' ') # time => txt (obj経由)
 
print orig
print date2
print text2
print time2
 
# 現在時刻
now = datetime.now()
print now
 
# 日時計算
one_hour_later    = now + timedelta(hours = 1)   # 1時間後
two_days_later    = now + timedelta(days  = 2)   # 2日後
three_weeks_later = now + timedelta(weeks = 3)   # 3週間後
print one_hour_later
print two_days_later
print three_weeks_later

#!/usr/bin/perl
 
use strict;
use warnings;
use Perl6::Say;
 
use DateTime;
use DateTime::Format::Strptime;
 
# obj, text, timestampの相互変換
my $format = '%Y-%m-%d %H:%M:%S';
my $parser = new DateTime::Format::Strptime(pattern => $format);
my $orig   = DateTime->new(year => 2009, month => 8, day => 10,
                           hour => 14, minute => 53, second => 30);
my $text1  = $orig->strftime($format);                                 # obj  => txt
my $date1  = $parser->parse_datetime($text1);                          # txt  => obj
my $time1  = $date1->epoch;                                            # obj  => time
my $date2  = DateTime->from_epoch(epoch => $time1);                    # time => obj
my $time2  = $parser->parse_datetime($text1)->epoch;                   # txt  => time (obj経由)
my $text2  = DateTime->from_epoch(epoch => $time2)->strftime($format); # time => txt  (obj経由)
 
say $orig;
say $date2;
say $time2;
say $text2;
 
# 現在時刻
my $now = DateTime->now;
say $now;
 
# 日時計算
my $one_hour_later    = $now->add(hours => 1);
my $two_days_later    = $now->add(days  => 2);
my $three_weeks_later = $now->add(weeks => 3);
say $one_hour_later;
say $two_days_later;
say $three_weeks_later;

#!/usr/bin/php
< ?php
# obj, text, timestamp(time)の相互変換
$format = 'Y-m-d H:i:s';
$orig  = new DateTime('2009-08-10 14:53:30');
$text1 = $orig->format($format);                # obj  => txt
$date1 = new DateTime($text1);                  # txt  => obj
$time1 = strtotime($date1->format($format));    # obj  => time (txt経由)
$date2 = new DateTime(date($format, $time1));   # time => obj  (txt経由)
list($y, $m, $d, $h, $mi, $s) = sscanf($text1, "%d-%d-%d %d:%d:%d");
$time2 = mktime($h, $mi, $s, $m, $d, $y);       # text => time
$text2 = date($format, $time2);                 # time => text

echo $orig->format($format) . "\n";
echo $date2->format($format) . "\n";
echo $text2, "\n";
echo $time2, "\n";
 
# 現在時刻
$now = new DateTime();
echo $now->format($format) . "\n";
 
# 日時計算
$one_hour_later    = clone $now;
$one_hour_later->modify('+1 hour'); # '+1 hour +2 day ...'
$two_days_later    = clone $now;
$two_days_later->modify('+2 days');
$three_weeks_later = clone $now;
$three_weeks_later->modify('+3 weeks');
echo $one_hour_later->format($format)    . "\n";
echo $two_days_later->format($format)    . "\n";
echo $three_weeks_later->format($format) . "\n";
?>

package {
    import flash.display.*;
 
    public class DatetimeTest extends Sprite {
        function DatetimeTest() {
            // obj, text, timestamp(time)の相互変換
            var orig:Date    = new Date(2009, 8, 10, 14, 53, 30);
            var text1:String = orig.toString();               // obj  => txt
            var date1:Date   = new Date(text1);               // txt  => obj
            var time1:Number = date1.getTime();               // obj  => time
            var date2:Date   = new Date(time1);               // time => obj
            var time2:Number = (new Date(text1)).getTime();   // txt  => time (obj経由)
            var text2:String = (new Date(time2)).toString();  // time => txt  (obj経由)
 
            log(orig);
            log(date2);
            log(text2);
            log(time2);
 
            // 現在時刻
            var now:Date = new Date();
            log(now);
 
            // 日時計算
            var one_hour_later:Date = new Date(now);
            one_hour_later.setTime(one_hour_later.getTime() + 60*60*1000);              // 1時間後
            var two_days_later:Date = new Date(now);
            two_days_later.setTime(two_days_later.getTime() + 2*24*60*60*1000);         // 2日後
            var three_weeks_later:Date = new Date(now);
            three_weeks_later.setTime(three_weeks_later.getTime() + 3*7*24*60*60*1000); // 3週間後
            log(one_hour_later);
            log(two_days_later);
            log(three_weeks_later);
        }
    }
}

< !DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" 
          "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
  <head>
    <title>datetime test</title>
    <script type="text/javascript" src="jquery-1.3.2.js"></script>
    <script type="text/javascript">
      $(
          function() {
              // obj, text, timestampの相互変換
              var orig  = new Date(2009, 8, 10, 14, 53, 30);
              var text1 = orig.toString();                // obj  => txt
              var date1 = new Date(text1);                // txt  => obj
              var time1 = date1.getTime();                // obj  => time
              var date2 = new Date(time1);                // time => obj
              var time2 = (new Date(text1)).getTime();    // txt  => time (obj経由)
              var text2 = (new Date(time2)).toString();   // time => txt  (obj経由)
              alert(text1);
              alert(date2);
              alert(text2);
              alert(time2);
 
              // 現在時刻
              var now = new Date();
              alert(now);
 
              // 日時計算
              var one_hour_later = new Date(now);
              one_hour_later.setTime(one_hour_later.getTime() + 60*60*1000);              // 1時間後
              var two_days_later = new Date(now);
              two_days_later.setTime(two_days_later.getTime() + 2*24*60*60*1000);         // 2日後
              var three_weeks_later = new Date(now);
              three_weeks_later.setTime(three_weeks_later.getTime() + 3*7*24*60*60*1000); // 3週間後
              alert(one_hour_later);
              alert(two_days_later);
              alert(three_weeks_later);
          }
      );
    </script>
  </head>
  <body>
  </body>
</html>

mysql> SELECT NOW();
+---------------------+
| 2009-08-06 12:08:55 |
+---------------------+
mysql> SELECT UNIX_TIMESTAMP(NOW());
+-----------------------+
|            1249528147 |
+-----------------------+
mysql> SELECT FROM_UNIXTIME(UNIX_TIMESTAMP(NOW()));
+--------------------------------------+
| 2009-08-06 12:09:31                  |
+--------------------------------------+

#!/usr/bin/python
# -*- coding: utf-8 -*-
import sys, codecs
sys.stdout = codecs.getwriter('utf_8')(sys.stdout)
 
import simplejson
 
data = { 'items':[
  {'name':'iPhone',  'price':50000},
  {'name':'macbook', 'price':100000},
  {'name':"マクド",  'price':100},
]}
text = simplejson.dumps(data)  # encode
copy = simplejson.loads(text)  # decode
 
print "data = " + str(data)
print "text = " + text
print "copy = " + str(copy)
for item in copy['items']:
  print item["name"]

#!/usr/bin/perl
 
use strict;
use warnings;
use Data::Dump qw(dump);
 
use JSON;
 
my $data = {'items' => [
  {'name' => 'iPhone',  'price' => 50000},
  {'name' => 'macbook', 'price' => 100000},
  {'name' => 'マクド',  'price' => 100},               
]};
my $text = encode_json($data);
my $copy = decode_json($text);
 
print "data = " . dump($data), "\n";
print "text = " . $text, "\n";
print "copy = " . dump($copy), "\n";
for my $item (@{ $copy->{"items"} }) {
    print $item->{"name"}, "\n";
}

#!/usr/bin/php
< ?php
$data = array('items' => array(
    array('name' => 'iPhone',  'price' => 50000),
    array('name' => 'macbook', 'price' => 100000),
    array('name' => 'マクド',  'price' => 100)
  )
);
$text = json_encode($data);
$copy = json_decode($text, true);
 
var_dump($data);
print $text . "\n";
var_dump($copy);
foreach ($copy["items"] as $item) {
  print $item["name"] . "\n";
}
?>

package {
    import flash.display.Sprite;
    import com.adobe.serialization.json.JSON;
 
    public class JsonTest extends Sprite {
        function JsonTest() {
            var data:Object = {
                items: [
                    { name:"iPhone",  price:50000  },
                    { name:"macbook", price:100000 },
                    { name:"マクド",  price:100    }
                ]
            };
            var text:String = JSON.encode(data);
            var copy:Object = JSON.decode(text);
 
            log(data);
            log(text);
            log(copy);
            for each (var item:Object in copy["items"]) {
                log(item["name"]);
            }
        }
    }
}

<html>
  <head>
    <script type="text/javascript" src="json2.js"></script>
    <script type="text/javascript">
      var data = { 'items':[
        {'name':'iPhone',  'price':50000},
        {'name':'macbook', 'price':100000},
        {'name':'マクド',  'price':100},
      ]};
      var text = JSON.stringify(data);  // encode
      var copy = JSON.parse(text);      // decode
 
      alert(data);
      alert(text);
      alert(copy);
      for (var i in copy["items"]) {
        alert(copy["items"][i]["name"]);
      }
    </script>
</head>
</html>