aboutsummaryrefslogtreecommitdiffstats
path: root/phpBB/includes/db/migration/data/timezone.php
blob: 89fafbad28ffb5f19c64b2dae70d1185c8b72685 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
<?php
/**
*
* @package migration
* @copyright (c) 2012 phpBB Group
* @license http://opensource.org/licenses/gpl-license.php GNU Public License v2
*
*/

class phpbb_db_migration_data_timezone extends phpbb_db_migration
{
	public function depends_on()
	{
		return array('phpbb_db_migration_data_3_0_11');
	}

	public function update_schema()
	{
		return array(
			'change_columns'	=> array(
				USERS_TABLE			=> array(
					'user_timezone'		=> array('VCHAR:100', ''),
				),
			),
		);
	}

	public function update_data()
	{
		return array(
			array('custom', array(array($this, 'update_timezones'))),
		);
	}

	public function update_timezones()
	{
		// Update user timezones
		$sql = 'SELECT user_dst, user_timezone
			FROM ' . USERS_TABLE . '
			GROUP BY user_timezone, user_dst';
		$result = $this->db->sql_query($sql);

		while ($row = $this->db->sql_fetchrow($result))
		{
			$sql = 'UPDATE ' . USERS_TABLE . "
				SET user_timezone = '" . $this->db->sql_escape($this->convert_phpbb30_timezone($row['user_timezone'], $row['user_dst'])) . "'
				WHERE user_timezone = '" . $this->db->sql_escape($row['user_timezone']) . "'
					AND user_dst = " . (int) $row['user_dst'];
			$this->sql_query($sql);
		}
		$this->db->sql_freeresult($result);

		// Update board default timezone
		set_config('board_timezone', $this->convert_phpbb30_timezone($config['board_timezone'], $config['board_dst']));

		// After we have calculated the timezones we can delete user_dst column from user table.
		$this->db_tools->sql_column_remove(USERS_TABLE, 'user_dst');
	}

	/**
	* Determine the new timezone for a given phpBB 3.0 timezone and
	* "Daylight Saving Time" option
	*
	*	@param	$timezone	float	Users timezone in 3.0
	*	@param	$dst		int		Users daylight saving time
	*	@return		string		Users new php Timezone which is used since 3.1
	*/
	public function convert_phpbb30_timezone($timezone, $dst)
	{
		$offset = $timezone + $dst;

		switch ($timezone)
		{
			case '-12':
				return 'Etc/GMT+' . abs($offset);	//'[UTC - 12] Baker Island Time'
			case '-11':
				return 'Etc/GMT+' . abs($offset);	//'[UTC - 11] Niue Time, Samoa Standard Time'
			case '-10':
				return 'Etc/GMT+' . abs($offset);	//'[UTC - 10] Hawaii-Aleutian Standard Time, Cook Island Time'
			case '-9.5':
				return 'Pacific/Marquesas';			//'[UTC - 9:30] Marquesas Islands Time'
			case '-9':
				return 'Etc/GMT+' . abs($offset);	//'[UTC - 9] Alaska Standard Time, Gambier Island Time'
			case '-8':
				return 'Etc/GMT+' . abs($offset);	//'[UTC - 8] Pacific Standard Time'
			case '-7':
				return 'Etc/GMT+' . abs($offset);	//'[UTC - 7] Mountain Standard Time'
			case '-6':
				return 'Etc/GMT+' . abs($offset);	//'[UTC - 6] Central Standard Time'
			case '-5':
				return 'Etc/GMT+' . abs($offset);	//'[UTC - 5] Eastern Standard Time'
			case '-4.5':
				return 'America/Caracas';			//'[UTC - 4:30] Venezuelan Standard Time'
			case '-4':
				return 'Etc/GMT+' . abs($offset);	//'[UTC - 4] Atlantic Standard Time'
			case '-3.5':
				return 'America/St_Johns';			//'[UTC - 3:30] Newfoundland Standard Time'
			case '-3':
				return 'Etc/GMT+' . abs($offset);	//'[UTC - 3] Amazon Standard Time, Central Greenland Time'
			case '-2':
				return 'Etc/GMT+' . abs($offset);	//'[UTC - 2] Fernando de Noronha Time, South Georgia &amp; the South Sandwich Islands Time'
			case '-1':
				return 'Etc/GMT+' . abs($offset);	//'[UTC - 1] Azores Standard Time, Cape Verde Time, Eastern Greenland Time'
			case '0':
				return (!$dst) ? 'UTC' : 'Etc/GMT-1';	//'[UTC] Western European Time, Greenwich Mean Time'
			case '1':
				return 'Etc/GMT-' . $offset;		//'[UTC + 1] Central European Time, West African Time'
			case '2':
				return 'Etc/GMT-' . $offset;		//'[UTC + 2] Eastern European Time, Central African Time'
			case '3':
				return 'Etc/GMT-' . $offset;		//'[UTC + 3] Moscow Standard Time, Eastern African Time'
			case '3.5':
				return 'Asia/Tehran';				//'[UTC + 3:30] Iran Standard Time'
			case '4':
				return 'Etc/GMT-' . $offset;		//'[UTC + 4] Gulf Standard Time, Samara Standard Time'
			case '4.5':
				return 'Asia/Kabul';				//'[UTC + 4:30] Afghanistan Time'
			case '5':
				return 'Etc/GMT-' . $offset;		//'[UTC + 5] Pakistan Standard Time, Yekaterinburg Standard Time'
			case '5.5':
				return 'Asia/Kolkata';				//'[UTC + 5:30] Indian Standard Time, Sri Lanka Time'
			case '5.75':
				return 'Asia/Kathmandu';			//'[UTC + 5:45] Nepal Time'
			case '6':
				return 'Etc/GMT-' . $offset;		//'[UTC + 6] Bangladesh Time, Bhutan Time, Novosibirsk Standard Time'
			case '6.5':
				return 'Indian/Cocos';				//'[UTC + 6:30] Cocos Islands Time, Myanmar Time'
			case '7':
				return 'Etc/GMT-' . $offset;		//'[UTC + 7] Indochina Time, Krasnoyarsk Standard Time'
			case '8':
				return 'Etc/GMT-' . $offset;		//'[UTC + 8] Chinese Standard Time, Australian Western Standard Time, Irkutsk Standard Time'
			case '8.75':
				return 'Australia/Eucla';			//'[UTC + 8:45] Southeastern Western Australia Standard Time'
			case '9':
				return 'Etc/GMT-' . $offset;		//'[UTC + 9] Japan Standard Time, Korea Standard Time, Chita Standard Time'
			case '9.5':
				return 'Australia/ACT';				//'[UTC + 9:30] Australian Central Standard Time'
			case '10':
				return 'Etc/GMT-' . $offset;		//'[UTC + 10] Australian Eastern Standard Time, Vladivostok Standard Time'
			case '10.5':
				return 'Australia/Lord_Howe';		//'[UTC + 10:30] Lord Howe Standard Time'
			case '11':
				return 'Etc/GMT-' . $offset;		//'[UTC + 11] Solomon Island Time, Magadan Standard Time'
			case '11.5':
				return 'Pacific/Norfolk';			//'[UTC + 11:30] Norfolk Island Time'
			case '12':
				return 'Etc/GMT-12';				//'[UTC + 12] New Zealand Time, Fiji Time, Kamchatka Standard Time'
			case '12.75':
				return 'Pacific/Chatham';			//'[UTC + 12:45] Chatham Islands Time'
			case '13':
				return 'Pacific/Tongatapu';			//'[UTC + 13] Tonga Time, Phoenix Islands Time'
			case '14':
				return 'Pacific/Kiritimati';		//'[UTC + 14] Line Island Time'
			default:
				return 'UTC';
		}
	}
}