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1 | <?php |
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2 | |
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3 | /** |
4 | * date.php |
5 | * |
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6 | * Copyright (c) 1999-2002 The SquirrelMail Project Team |
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7 | * Licensed under the GNU GPL. For full terms see the file COPYING. |
8 | * |
9 | * Takes a date and parses it into a usable format. The form that a |
10 | * date SHOULD arrive in is: |
11 | * <Tue,> 29 Jun 1999 09:52:11 -0500 (EDT) |
12 | * (as specified in RFC 822) -- 'Tue' is optional |
13 | * |
14 | * $Id$ |
15 | */ |
16 | |
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17 | require_once( '../functions/constants.php' ); |
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18 | |
19 | // corrects a time stamp to be the local time |
20 | function getGMTSeconds($stamp, $gmt) { |
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21 | global $invert_time; |
22 | if (($gmt == 'Pacific') || ($gmt == 'PST')) { |
23 | $gmt = '-0800'; |
24 | } else if (($gmt == 'EDT')) { |
25 | $gmt = '-0400'; |
26 | } else if (($gmt == 'Eastern') || ($gmt == 'EST') || ($gmt == 'CDT')) { |
27 | $gmt = '-0500'; |
28 | } else if (($gmt == 'Central') || ($gmt == 'CST') || ($gmt == 'MDT')) { |
29 | $gmt = '-0600'; |
30 | } else if (($gmt == 'Mountain') || ($gmt == 'MST') || ($gmt == 'PDT')) { |
31 | $gmt = '-0700'; |
32 | } else if ($gmt == 'BST') { |
33 | $gmt = '+0100'; |
34 | } else if ($gmt == 'EET') { |
35 | $gmt = '+0200'; |
36 | } else if ($gmt == 'GMT') { |
37 | $gmt = '+0000'; |
38 | } else if ($gmt == 'HKT') { |
39 | $gmt = '+0800'; |
40 | } else if ($gmt == 'IST') { |
41 | $gmt = '+0200'; |
42 | } else if ($gmt == 'JST') { |
43 | $gmt = '+0900'; |
44 | } else if ($gmt == 'KST') { |
45 | $gmt = "+0900"; |
46 | } else if ($gmt == 'MET') { |
47 | $gmt = '+0100'; |
48 | } else if ($gmt == 'MET DST' || $gmt == 'METDST') { |
49 | $gmt = '+0200'; |
50 | } |
51 | |
52 | if (substr($gmt, 0, 1) == '-') { |
53 | $neg = true; |
54 | $gmt = substr($gmt, 1, strlen($gmt)); |
55 | } else if (substr($gmt, 0, 1) == '+') { |
56 | $neg = false; |
57 | $gmt = substr($gmt, 1, strlen($gmt)); |
58 | } else { |
59 | $neg = false; |
60 | } |
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61 | |
62 | $difference = substr($gmt, 2, 2); |
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63 | $gmt = substr($gmt, 0, 2); |
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64 | $gmt = ($gmt + ($difference / 60)) * 3600; |
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65 | if ($neg == true) { |
66 | $gmt = "-$gmt"; |
67 | } else { |
68 | $gmt = "+$gmt"; |
69 | } |
70 | |
71 | /** now find what the server is at **/ |
72 | $current = date('Z', time()); |
73 | if ($invert_time) { |
74 | $current = - $current; |
75 | } |
76 | $stamp = (int)$stamp - (int)$gmt + (int)$current; |
77 | |
78 | return $stamp; |
79 | } |
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80 | |
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81 | /** |
82 | Switch system has been intentionaly choosed for the |
83 | internationalization of month and day names. The reason |
84 | is to make sure that _("") strings will go into the |
85 | main po. |
86 | **/ |
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87 | |
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88 | function getDayName( $day_number ) { |
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89 | |
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90 | switch( $day_number ) { |
91 | case 0: |
92 | $ret = _("Sunday"); |
93 | break; |
94 | case 1: |
95 | $ret = _("Monday"); |
96 | break; |
97 | case 2: |
98 | $ret = _("Tuesday"); |
99 | break; |
100 | case 3: |
101 | $ret = _("Wednesday"); |
102 | break; |
103 | case 4: |
104 | $ret = _("Thursday"); |
105 | break; |
106 | case 5: |
107 | $ret = _("Friday"); |
108 | break; |
109 | case 6: |
110 | $ret = _("Saturday"); |
111 | break; |
112 | default: |
113 | $ret = ''; |
114 | } |
115 | return( $ret ); |
116 | } |
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117 | |
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118 | function getMonthName( $month_number ) { |
119 | switch( $month_number ) { |
120 | case '01': |
121 | $ret = _("January"); |
122 | break; |
123 | case '02': |
124 | $ret = _("February"); |
125 | break; |
126 | case '03': |
127 | $ret = _("March"); |
128 | break; |
129 | case '04': |
130 | $ret = _("April"); |
131 | break; |
132 | case '05': |
133 | $ret = _("May"); |
134 | break; |
135 | case '06': |
136 | $ret = _("June"); |
137 | break; |
138 | case '07': |
139 | $ret = _("July"); |
140 | break; |
141 | case '08': |
142 | $ret = _("August"); |
143 | break; |
144 | case '09': |
145 | $ret = _("September"); |
146 | break; |
147 | case '10': |
148 | $ret = _("October"); |
149 | break; |
150 | case '11': |
151 | $ret = _("November"); |
152 | break; |
153 | case '12': |
154 | $ret = _("December"); |
155 | break; |
156 | default: |
157 | $ret = ''; |
158 | } |
159 | return( $ret ); |
160 | } |
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161 | |
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162 | function date_intl( $date_format, $stamp ) { |
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163 | |
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164 | $ret = str_replace( 'D', '$1', $date_format ); |
165 | $ret = str_replace( 'F', '$2', $ret ); |
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166 | $ret = str_replace( 'l', '$4', $ret ); |
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167 | $ret = str_replace( 'M', '$5', $ret ); |
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168 | $ret = date( '$3'. $ret . '$3', $stamp ); // Workaround for a PHP 4.0.4 problem |
169 | $ret = str_replace( '$1', substr( getDayName( date( 'w', $stamp ) ), 0, 3 ), $ret ); |
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170 | $ret = str_replace( '$5', substr( getMonthName( date( 'm', $stamp ) ), 0, 3 ), $ret ); |
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171 | $ret = str_replace( '$2', getMonthName( date( 'm', $stamp ) ), $ret ); |
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172 | $ret = str_replace( '$4', getDayName( date( 'w', $stamp ) ), $ret ); |
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173 | $ret = str_replace( '$3', '', $ret ); |
174 | |
175 | return( $ret ); |
176 | } |
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177 | |
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178 | function getLongDateString( $stamp ) { |
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179 | |
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180 | global $hour_format; |
181 | |
182 | if ( $hour_format == SMPREF_TIME_12HR ) { |
183 | $date_format = _("D, F j, Y g:i a"); |
184 | } else { |
185 | $date_format = _("D, F j, Y G:i"); |
186 | } |
187 | |
188 | return( date_intl( $date_format, $stamp ) ); |
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189 | |
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190 | } |
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191 | |
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192 | function getDateString( $stamp ) { |
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193 | |
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194 | global $invert_time, $hour_format; |
195 | |
196 | $now = time(); |
197 | |
198 | $dateZ = date('Z', $now ); |
199 | if ($invert_time) { |
200 | $dateZ = - $dateZ; |
201 | } |
202 | $midnight = $now - ($now % 86400) - $dateZ; |
203 | |
204 | if ($midnight < $stamp) { |
205 | /* Today */ |
206 | if ( $hour_format == SMPREF_TIME_12HR ) { |
207 | $date_format = _("g:i a"); |
208 | } else { |
209 | $date_format = _("G:i"); |
210 | } |
211 | } else if ($midnight - 518400 < $stamp) { |
212 | /* This week */ |
213 | if ( $hour_format == SMPREF_TIME_12HR ) { |
214 | $date_format = _("D, g:i a"); |
215 | } else { |
216 | $date_format = _("D, G:i"); |
217 | } |
218 | } else { |
219 | /* before this week */ |
220 | $date_format = _("M j, Y"); |
221 | } |
222 | |
223 | return( date_intl( $date_format, $stamp ) ); |
224 | } |
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225 | |
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226 | function getTimeStamp($dateParts) { |
227 | /** $dateParts[0] == <day of week> Mon, Tue, Wed |
228 | ** $dateParts[1] == <day of month> 23 |
229 | ** $dateParts[2] == <month> Jan, Feb, Mar |
230 | ** $dateParts[3] == <year> 1999 |
231 | ** $dateParts[4] == <time> 18:54:23 (HH:MM:SS) |
232 | ** $dateParts[5] == <from GMT> +0100 |
233 | ** $dateParts[6] == <zone> (EDT) |
234 | ** |
235 | ** NOTE: In RFC 822, it states that <day of week> is optional. |
236 | ** In that case, dateParts[0] would be the <day of month> |
237 | ** and everything would be bumped up one. |
238 | **/ |
239 | |
240 | /* |
241 | * Simply check to see if the first element in the dateParts |
242 | * array is an integer or not. |
243 | * Since the day of week is optional, this check is needed. |
244 | * |
245 | * The old code used eregi('mon|tue|wed|thu|fri|sat|sun', |
246 | * $dateParts[0], $tmp) to find if the first element was the |
247 | * day of week or day of month. This is an expensive call |
248 | * (processing time) to have inside a loop. Doing it this way |
249 | * saves quite a bit of time for large mailboxes. |
250 | * |
251 | * It is also quicker to call explode only once rather than |
252 | * the 3 times it was getting called by calling the functions |
253 | * getHour, getMinute, and getSecond. |
254 | */ |
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255 | |
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256 | if (! isset($dateParts[1])) { |
257 | $dateParts[1] = ''; |
258 | } |
259 | if (! isset($dateParts[2])) { |
260 | $dateParts[2] = ''; |
261 | } |
262 | if (! isset($dateParts[3])) { |
263 | $dateParts[3] = ''; |
264 | } |
265 | if (! isset($dateParts[4])) { |
266 | $dateParts[4] = ''; |
267 | } |
268 | if (! isset($dateParts[5])) { |
269 | $dateParts[5] = ''; |
270 | } |
271 | if (intval(trim($dateParts[0])) > 0) { |
272 | $string = $dateParts[0] . ' ' . $dateParts[1] . ' ' . |
273 | $dateParts[2] . ' ' . $dateParts[3]; |
274 | return getGMTSeconds(strtotime($string), $dateParts[4]); |
275 | } |
276 | $string = $dateParts[0] . ' ' . $dateParts[1] . ' ' . |
277 | $dateParts[2] . ' ' . $dateParts[3] . ' ' . $dateParts[4]; |
278 | if (isset($dateParts[5])) { |
279 | return getGMTSeconds(strtotime($string), $dateParts[5]); |
280 | } else { |
281 | return getGMTSeconds(strtotime($string), ''); |
282 | } |
283 | } |
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284 | |
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285 | /* I use this function for profiling. Should never be called in |
286 | actual versions of squirrelmail released to public. */ |
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287 | /* |
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288 | function getmicrotime() { |
289 | $mtime = microtime(); |
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290 | $mtime = explode(' ',$mtime); |
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291 | $mtime = $mtime[1] + $mtime[0]; |
292 | return ($mtime); |
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293 | } |
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294 | */ |
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295 | ?> |