1 | <?php |
---|
2 | /* vim: set expandtab tabstop=4 shiftwidth=4: */ |
---|
3 | // |
---|
4 | // +----------------------------------------------------------------------+ |
---|
5 | // | PHP Version 4 | |
---|
6 | // +----------------------------------------------------------------------+ |
---|
7 | // | Copyright (c) 1997-2002 The PHP Group | |
---|
8 | // +----------------------------------------------------------------------+ |
---|
9 | // | This source file is subject to version 2.02 of the PHP license, | |
---|
10 | // | that is bundled with this package in the file LICENSE, and is | |
---|
11 | // | available at through the world-wide-web at | |
---|
12 | // | http://www.php.net/license/3_0.txt. | |
---|
13 | // | If you did not receive a copy of the PHP license and are unable to | |
---|
14 | // | obtain it through the world-wide-web, please send a note to | |
---|
15 | // | license@php.net so we can mail you a copy immediately. | |
---|
16 | // +----------------------------------------------------------------------+ |
---|
17 | // | Authors: Lorenzo Alberton <l dot alberton at quipo dot it> | |
---|
18 | // +----------------------------------------------------------------------+ |
---|
19 | // |
---|
20 | // $Id: PearDate.php,v 1.8 2004/08/20 20:00:55 quipo Exp $ |
---|
21 | // |
---|
22 | /** |
---|
23 | * @package Calendar |
---|
24 | * @version $Id: PearDate.php,v 1.8 2004/08/20 20:00:55 quipo Exp $ |
---|
25 | */ |
---|
26 | /** |
---|
27 | * Load PEAR::Date class |
---|
28 | */ |
---|
29 | require_once 'Date.php'; |
---|
30 | |
---|
31 | /** |
---|
32 | * Performs calendar calculations based on the PEAR::Date class |
---|
33 | * Timestamps are in the ISO-8601 format (YYYY-MM-DD HH:MM:SS) |
---|
34 | * @package Calendar |
---|
35 | * @access protected |
---|
36 | */ |
---|
37 | class Calendar_Engine_PearDate /* implements Calendar_Engine_Interface */ |
---|
38 | { |
---|
39 | /** |
---|
40 | * Makes sure a given timestamp is only ever parsed once |
---|
41 | * Uses a static variable to prevent date() being used twice |
---|
42 | * for a date which is already known |
---|
43 | * @param mixed Any timestamp format recognized by Pear::Date |
---|
44 | * @return object Pear::Date object |
---|
45 | * @access protected |
---|
46 | */ |
---|
47 | function stampCollection($stamp) |
---|
48 | { |
---|
49 | static $stamps = array(); |
---|
50 | if (!isset($stamps[$stamp])) { |
---|
51 | $stamps[$stamp] = new Date($stamp); |
---|
52 | } |
---|
53 | return $stamps[$stamp]; |
---|
54 | } |
---|
55 | |
---|
56 | /** |
---|
57 | * Returns a numeric year given a iso-8601 datetime |
---|
58 | * @param string iso-8601 datetime (YYYY-MM-DD HH:MM:SS) |
---|
59 | * @return int year (e.g. 2003) |
---|
60 | * @access protected |
---|
61 | */ |
---|
62 | function stampToYear($stamp) |
---|
63 | { |
---|
64 | $date = Calendar_Engine_PearDate::stampCollection($stamp); |
---|
65 | return (int)$date->year; |
---|
66 | } |
---|
67 | |
---|
68 | /** |
---|
69 | * Returns a numeric month given a iso-8601 datetime |
---|
70 | * @param string iso-8601 datetime (YYYY-MM-DD HH:MM:SS) |
---|
71 | * @return int month (e.g. 9) |
---|
72 | * @access protected |
---|
73 | */ |
---|
74 | function stampToMonth($stamp) |
---|
75 | { |
---|
76 | $date = Calendar_Engine_PearDate::stampCollection($stamp); |
---|
77 | return (int)$date->month; |
---|
78 | } |
---|
79 | |
---|
80 | /** |
---|
81 | * Returns a numeric day given a iso-8601 datetime |
---|
82 | * @param string iso-8601 datetime (YYYY-MM-DD HH:MM:SS) |
---|
83 | * @return int day (e.g. 15) |
---|
84 | * @access protected |
---|
85 | */ |
---|
86 | function stampToDay($stamp) |
---|
87 | { |
---|
88 | $date = Calendar_Engine_PearDate::stampCollection($stamp); |
---|
89 | return (int)$date->day; |
---|
90 | } |
---|
91 | |
---|
92 | /** |
---|
93 | * Returns a numeric hour given a iso-8601 datetime |
---|
94 | * @param string iso-8601 datetime (YYYY-MM-DD HH:MM:SS) |
---|
95 | * @return int hour (e.g. 13) |
---|
96 | * @access protected |
---|
97 | */ |
---|
98 | function stampToHour($stamp) |
---|
99 | { |
---|
100 | $date = Calendar_Engine_PearDate::stampCollection($stamp); |
---|
101 | return (int)$date->hour; |
---|
102 | } |
---|
103 | |
---|
104 | /** |
---|
105 | * Returns a numeric minute given a iso-8601 datetime |
---|
106 | * @param string iso-8601 datetime (YYYY-MM-DD HH:MM:SS) |
---|
107 | * @return int minute (e.g. 34) |
---|
108 | * @access protected |
---|
109 | */ |
---|
110 | function stampToMinute($stamp) |
---|
111 | { |
---|
112 | $date = Calendar_Engine_PearDate::stampCollection($stamp); |
---|
113 | return (int)$date->minute; |
---|
114 | } |
---|
115 | |
---|
116 | /** |
---|
117 | * Returns a numeric second given a iso-8601 datetime |
---|
118 | * @param string iso-8601 datetime (YYYY-MM-DD HH:MM:SS) |
---|
119 | * @return int second (e.g. 51) |
---|
120 | * @access protected |
---|
121 | */ |
---|
122 | function stampToSecond($stamp) |
---|
123 | { |
---|
124 | $date = Calendar_Engine_PearDate::stampCollection($stamp); |
---|
125 | return (int)$date->second; |
---|
126 | } |
---|
127 | |
---|
128 | /** |
---|
129 | * Returns a iso-8601 datetime |
---|
130 | * @param int year (2003) |
---|
131 | * @param int month (9) |
---|
132 | * @param int day (13) |
---|
133 | * @param int hour (13) |
---|
134 | * @param int minute (34) |
---|
135 | * @param int second (53) |
---|
136 | * @return string iso-8601 datetime |
---|
137 | * @access protected |
---|
138 | */ |
---|
139 | function dateToStamp($y, $m, $d, $h=0, $i=0, $s=0) |
---|
140 | { |
---|
141 | $r = array(); |
---|
142 | Calendar_Engine_PearDate::adjustDate($y, $m, $d, $h, $i, $s); |
---|
143 | $key = $y.$m.$d.$h.$i.$s; |
---|
144 | if (!isset($r[$key])) { |
---|
145 | $r[$key] = sprintf("%04d-%02d-%02d %02d:%02d:%02d", |
---|
146 | $y, $m, $d, $h, $i, $s); |
---|
147 | } |
---|
148 | return $r[$key]; |
---|
149 | } |
---|
150 | |
---|
151 | /** |
---|
152 | * Set the correct date values (useful for math operations on dates) |
---|
153 | * @param int year (2003) |
---|
154 | * @param int month (9) |
---|
155 | * @param int day (13) |
---|
156 | * @param int hour (13) |
---|
157 | * @param int minute (34) |
---|
158 | * @param int second (53) |
---|
159 | * @access protected |
---|
160 | */ |
---|
161 | function adjustDate(&$y, &$m, &$d, &$h, &$i, &$s) |
---|
162 | { |
---|
163 | if ($s < 0) { |
---|
164 | $m -= floor($s / 60); |
---|
165 | $s = -$s % 60; |
---|
166 | } |
---|
167 | if ($s > 60) { |
---|
168 | $m += floor($s / 60); |
---|
169 | $s %= 60; |
---|
170 | } |
---|
171 | if ($i < 0) { |
---|
172 | $h -= floor($i / 60); |
---|
173 | $i = -$i % 60; |
---|
174 | } |
---|
175 | if ($i > 60) { |
---|
176 | $h += floor($i / 60); |
---|
177 | $i %= 60; |
---|
178 | } |
---|
179 | if ($h < 0) { |
---|
180 | $d -= floor($h / 24); |
---|
181 | $h = -$h % 24; |
---|
182 | } |
---|
183 | if ($h > 24) { |
---|
184 | $d += floor($h / 24); |
---|
185 | $h %= 24; |
---|
186 | } |
---|
187 | for(; $m < 1; $y--, $m+=12); |
---|
188 | for(; $m > 12; $y++, $m-=12); |
---|
189 | |
---|
190 | while ($d < 1) { |
---|
191 | if ($m > 1) { |
---|
192 | $m--; |
---|
193 | } else { |
---|
194 | $m = 12; |
---|
195 | $y--; |
---|
196 | } |
---|
197 | $d += Date_Calc::daysInMonth($m, $y); |
---|
198 | } |
---|
199 | for ($max_days = Date_Calc::daysInMonth($m, $y); $d > $max_days; ) { |
---|
200 | $d -= $max_days; |
---|
201 | if ($m < 12) { |
---|
202 | $m++; |
---|
203 | } else { |
---|
204 | $m = 1; |
---|
205 | $y++; |
---|
206 | } |
---|
207 | } |
---|
208 | } |
---|
209 | |
---|
210 | /** |
---|
211 | * The upper limit on years that the Calendar Engine can work with |
---|
212 | * @return int 9999 |
---|
213 | * @access protected |
---|
214 | */ |
---|
215 | function getMaxYears() |
---|
216 | { |
---|
217 | return 9999; |
---|
218 | } |
---|
219 | |
---|
220 | /** |
---|
221 | * The lower limit on years that the Calendar Engine can work with |
---|
222 | * @return int 0 |
---|
223 | * @access protected |
---|
224 | */ |
---|
225 | function getMinYears() |
---|
226 | { |
---|
227 | return 0; |
---|
228 | } |
---|
229 | |
---|
230 | /** |
---|
231 | * Returns the number of months in a year |
---|
232 | * @return int (12) |
---|
233 | * @access protected |
---|
234 | */ |
---|
235 | function getMonthsInYear($y=null) |
---|
236 | { |
---|
237 | return 12; |
---|
238 | } |
---|
239 | |
---|
240 | /** |
---|
241 | * Returns the number of days in a month, given year and month |
---|
242 | * @param int year (2003) |
---|
243 | * @param int month (9) |
---|
244 | * @return int days in month |
---|
245 | * @access protected |
---|
246 | */ |
---|
247 | function getDaysInMonth($y, $m) |
---|
248 | { |
---|
249 | return (int)Date_Calc::daysInMonth($m, $y); |
---|
250 | } |
---|
251 | |
---|
252 | /** |
---|
253 | * Returns numeric representation of the day of the week in a month, |
---|
254 | * given year and month |
---|
255 | * @param int year (2003) |
---|
256 | * @param int month (9) |
---|
257 | * @return int from 0 to 7 |
---|
258 | * @access protected |
---|
259 | */ |
---|
260 | function getFirstDayInMonth($y, $m) |
---|
261 | { |
---|
262 | return (int)Date_Calc::dayOfWeek(1, $m, $y); |
---|
263 | } |
---|
264 | |
---|
265 | /** |
---|
266 | * Returns the number of days in a week |
---|
267 | * @param int year (2003) |
---|
268 | * @param int month (9) |
---|
269 | * @param int day (4) |
---|
270 | * @return int (7) |
---|
271 | * @access protected |
---|
272 | */ |
---|
273 | function getDaysInWeek($y=NULL, $m=NULL, $d=NULL) |
---|
274 | { |
---|
275 | return 7; |
---|
276 | } |
---|
277 | |
---|
278 | /** |
---|
279 | * Returns the number of the week in the year (ISO-8601), given a date |
---|
280 | * @param int year (2003) |
---|
281 | * @param int month (9) |
---|
282 | * @param int day (4) |
---|
283 | * @return int week number |
---|
284 | * @access protected |
---|
285 | */ |
---|
286 | function getWeekNInYear($y, $m, $d) |
---|
287 | { |
---|
288 | return Date_Calc::weekOfYear($d, $m, $y); //beware, Date_Calc doesn't follow ISO-8601 standard! |
---|
289 | } |
---|
290 | |
---|
291 | /** |
---|
292 | * Returns the number of the week in the month, given a date |
---|
293 | * @param int year (2003) |
---|
294 | * @param int month (9) |
---|
295 | * @param int day (4) |
---|
296 | * @param int first day of the week (default: monday) |
---|
297 | * @return int week number |
---|
298 | * @access protected |
---|
299 | */ |
---|
300 | function getWeekNInMonth($y, $m, $d, $firstDay=1) |
---|
301 | { |
---|
302 | $weekEnd = ($firstDay == 0) ? $this->getDaysInWeek()-1 : $firstDay-1; |
---|
303 | $end_of_week = (int)Date_Calc::nextDayOfWeek($weekEnd, 1, $m, $y, '%e', true); |
---|
304 | $w = 1; |
---|
305 | while ($d > $end_of_week) { |
---|
306 | ++$w; |
---|
307 | $end_of_week += $this->getDaysInWeek(); |
---|
308 | } |
---|
309 | return $w; |
---|
310 | } |
---|
311 | |
---|
312 | /** |
---|
313 | * Returns the number of weeks in the month |
---|
314 | * @param int year (2003) |
---|
315 | * @param int month (9) |
---|
316 | * @param int first day of the week (default: monday) |
---|
317 | * @return int weeks number |
---|
318 | * @access protected |
---|
319 | */ |
---|
320 | function getWeeksInMonth($y, $m, $firstDay=1) |
---|
321 | { |
---|
322 | $FDOM = Date_Calc::firstOfMonthWeekday($m, $y); |
---|
323 | if ($FDOM == 0) { |
---|
324 | $FDOM = $this->getDaysInWeek(); |
---|
325 | } |
---|
326 | if ($FDOM > $firstDay) { |
---|
327 | $daysInTheFirstWeek = $this->getDaysInWeek() - $FDOM + $firstDay; |
---|
328 | $weeks = 1; |
---|
329 | } else { |
---|
330 | $daysInTheFirstWeek = $firstDay - $FDOM; |
---|
331 | $weeks = 0; |
---|
332 | } |
---|
333 | $daysInTheFirstWeek %= $this->getDaysInWeek(); |
---|
334 | return (int)(ceil(($this->getDaysInMonth($y, $m) - $daysInTheFirstWeek) / |
---|
335 | $this->getDaysInWeek()) + $weeks); |
---|
336 | } |
---|
337 | |
---|
338 | /** |
---|
339 | * Returns the number of the day of the week (0=sunday, 1=monday...) |
---|
340 | * @param int year (2003) |
---|
341 | * @param int month (9) |
---|
342 | * @param int day (4) |
---|
343 | * @return int weekday number |
---|
344 | * @access protected |
---|
345 | */ |
---|
346 | function getDayOfWeek($y, $m, $d) |
---|
347 | { |
---|
348 | return Date_Calc::dayOfWeek($d, $m, $y); |
---|
349 | } |
---|
350 | |
---|
351 | /** |
---|
352 | * Returns a list of integer days of the week beginning 0 |
---|
353 | * @param int year (2003) |
---|
354 | * @param int month (9) |
---|
355 | * @param int day (4) |
---|
356 | * @return array (0, 1, 2, 3, 4, 5, 6) 1 = Monday |
---|
357 | * @access protected |
---|
358 | */ |
---|
359 | function getWeekDays($y=NULL, $m=NULL, $d=NULL) |
---|
360 | { |
---|
361 | return array(0, 1, 2, 3, 4, 5, 6); |
---|
362 | } |
---|
363 | |
---|
364 | /** |
---|
365 | * Returns the default first day of the week |
---|
366 | * @param int year (2003) |
---|
367 | * @param int month (9) |
---|
368 | * @param int day (4) |
---|
369 | * @return int (default 1 = Monday) |
---|
370 | * @access protected |
---|
371 | */ |
---|
372 | function getFirstDayOfWeek($y=NULL, $m=NULL, $d=NULL) |
---|
373 | { |
---|
374 | return 1; |
---|
375 | } |
---|
376 | |
---|
377 | /** |
---|
378 | * Returns the number of hours in a day |
---|
379 | * @return int (24) |
---|
380 | * @access protected |
---|
381 | */ |
---|
382 | function getHoursInDay($y=null,$m=null,$d=null) |
---|
383 | { |
---|
384 | return 24; |
---|
385 | } |
---|
386 | |
---|
387 | /** |
---|
388 | * Returns the number of minutes in an hour |
---|
389 | * @return int (60) |
---|
390 | * @access protected |
---|
391 | */ |
---|
392 | function getMinutesInHour($y=null,$m=null,$d=null,$h=null) |
---|
393 | { |
---|
394 | return 60; |
---|
395 | } |
---|
396 | |
---|
397 | /** |
---|
398 | * Returns the number of seconds in a minutes |
---|
399 | * @return int (60) |
---|
400 | * @access protected |
---|
401 | */ |
---|
402 | function getSecondsInMinute($y=null,$m=null,$d=null,$h=null,$i=null) |
---|
403 | { |
---|
404 | return 60; |
---|
405 | } |
---|
406 | } |
---|
407 | ?> |
---|