functions/date.php

   1 <?php
   2    /**
   3     **  date.php
   4     **
   5     **  Takes a date and parses it into a usable format.  The form that a
   6     **  date SHOULD arrive in is:
   7     **        <Tue,> 29 Jun 1999 09:52:11 -0500 (EDT)
   8     **  (as specified in RFC 822) -- "Tue" is optional
   9     **
  10     **/
  11
  12    $date_php = true;
  13
  14    function getMinutes($hour) {
  15       $date = $hour;
  16
  17       if (($hour == 0) || ($hour == "00"))
  18          $date = "00";
  19       else if (($hour == 1) || ($hour == "01"))
  20          $date = "01";
  21       else if (($hour == 2) || ($hour == "02"))
  22          $date = "02";
  23       else if (($hour == 3) || ($hour == "03"))
  24          $date = "03";
  25       else if (($hour == 4) || ($hour == "04"))
  26          $date = "04";
  27       else if (($hour == 5) || ($hour == "05"))
  28          $date = "05";
  29       else if (($hour == 6) || ($hour == "06"))
  30          $date = "06";
  31       else if (($hour == 7) || ($hour == "07"))
  32          $date = "07";
  33       else if (($hour == 8) || ($hour == "08"))
  34          $date = "08";
  35       else if (($hour == 9) || ($hour == "09"))
  36          $date = "09";
  37
  38       return $date;
  39    }
  40
  41    // corrects a time stamp to be the local time
  42    function getGMTSeconds($stamp, $gmt) {
  43       if (($gmt == "Pacific") || ($gmt == "PST"))
  44          $gmt = "-0800";
  45       else if (($gmt == "EDT"))
  46          $gmt = "-0400";
  47       else if (($gmt == "Eastern") || ($gmt == "EST") || ($gmt == "CDT"))
  48          $gmt = "-0500";
  49       else if (($gmt == "Central") || ($gmt == "CST") || ($gmt == "MDT"))
  50          $gmt = "-0600";
  51       else if (($gmt == "Mountain") || ($gmt == "MST") || ($gmt == "PDT"))
  52          $gmt = "-0700";
  53       else if ($gmt == "BST")
  54          $gmt = "+0100";
  55       else if ($gmt == "EET")
  56          $gmt = "+0200";
  57       else if ($gmt == "GMT")
  58          $gmt = "+0000";
  59       else if ($gmt == "HKT")
  60          $gmt = "+0800";
  61       else if ($gmt == "IST")
  62          $gmt = "+0200";
  63       else if ($gmt == "JST")
  64          $gmt = "+0900";
  65       else if ($gmt == "MET")
  66          $gmt = "+0100";
  67       else if ($gmt == "MET DST" || $gmt == "METDST")
  68          $gmt = "+0200";
  69
  70       if (substr($gmt, 0, 1) == "-") {
  71          $neg = true;
  72          $gmt = substr($gmt, 1, strlen($gmt));
  73       } else if (substr($gmt, 0, 1) == "+") {
  74          $neg = false;
  75          $gmt = substr($gmt, 1, strlen($gmt));
  76       } else
  77          $neg = false;
  78
  79       $gmt = substr($gmt, 0, 2);
  80       $gmt = $gmt * 3600;
  81       if ($neg == true)
  82          $gmt = "-$gmt";
  83       else
  84          $gmt = "+$gmt";
  85
  86       /** now find what the server is at **/
  87       $current = date("Z", time());
  88
  89       $stamp = (int)$stamp - (int)$gmt + (int)$current;
  90
  91       return $stamp;
  92    }
  93
  94    function getHour($hour) {
  95       $time = explode(":", $hour);
  96       return $time[0];
  97    }
  98
  99    function getMinute($min) {
 100       $time = explode(":", $min);
 101       return $time[1];
 102    }
 103
 104    function getSecond($sec) {
 105       $time = explode(":", $sec);
 106       return $time[2];
 107    }
 108
 109    function getMonthNum($month) {
 110       if (eregi("jan|january", $month, $tmp))
 111          $date = "01";
 112       else if (eregi("feb|february|febuary", $month, $tmp))
 113          $date = "02";
 114       else if (eregi("mar|march", $month, $tmp))
 115          $date = "03";
 116       else if (eregi("apr|april", $month, $tmp))
 117          $date = "04";
 118       else if (eregi("may", $month, $tmp))
 119          $date = "05";
 120       else if (eregi("jun|june", $month, $tmp))
 121          $date = "06";
 122       else if (eregi("jul|july", $month, $tmp))
 123          $date = "07";
 124       else if (eregi("aug|august", $month, $tmp))
 125          $date = "08";
 126       else if (eregi("sep|sept|september", $month, $tmp))
 127          $date = "09";
 128       else if (eregi("oct|october", $month, $tmp))
 129          $date = "10";
 130       else if (eregi("nov|november", $month, $tmp))
 131          $date = "11";
 132       else if (eregi("dec|december", $month, $tmp))
 133          $date = "12";
 134
 135       return $date;
 136    }
 137
 138    function getDayOfWeek($day) {
 139       $date = "{WEEKDAY}";
 140
 141       if (eregi("(mon|monday)", $day, $tmp))
 142          $date = "Mon";
 143       else if (eregi("(tue|tuesday)", $day, $tmp))
 144          $date = "Tue";
 145       else if (eregi("(wed|wednesday)", $day, $tmp))
 146          $date = "Wed";
 147       else if (eregi("(thurs|thu|thursday)", $day, $tmp))
 148          $date = "Thu";
 149       else if (eregi("(fri|friday)", $day, $tmp))
 150          $date = "Fri";
 151       else if (eregi("(sat|saturday)", $day, $tmp))
 152          $date = "Sat";
 153       else if (eregi("(sun|sunday)", $day, $tmp))
 154          $date = "Sun";
 155
 156       return $date;
 157    }
 158
 159    function getDayOfMonth($day) {
 160       return ereg_replace("^0", "", $day); /* remove a preceeding 0 */
 161    }
 162
 163    function getMonth($month) {
 164       $date = "{MONTH}";
 165       if (eregi("jan|january", $month, $tmp))
 166          $date = "Jan";
 167       else if (eregi("feb|february|febuary", $month, $tmp))
 168          $date = "Feb";
 169       else if (eregi("mar|march", $month, $tmp))
 170          $date = "Mar";
 171       else if (eregi("apr|april", $month, $tmp))
 172          $date = "Apr";
 173       else if (eregi("may", $month, $tmp))
 174          $date = "May";
 175       else if (eregi("jun|june", $month, $tmp))
 176          $date = "Jun";
 177       else if (eregi("jul|july", $month, $tmp))
 178          $date = "Jul";
 179       else if (eregi("aug|august", $month, $tmp))
 180          $date = "Aug";
 181       else if (eregi("sep|sept|september", $month, $tmp))
 182          $date = "Sep";
 183       else if (eregi("oct|october", $month, $tmp))
 184          $date = "Oct";
 185       else if (eregi("nov|november", $month, $tmp))
 186          $date = "Nov";
 187       else if (eregi("dec|december", $month, $tmp))
 188          $date = "Dec";
 189
 190       return $date;
 191    }
 192
 193    function getYear($year) {
 194       return $year;
 195    }
 196
 197    function getLongDateString($stamp) {
 198       return date("D, F j, Y g:i a", $stamp);
 199    }
 200
 201    function getDateString($stamp) {
 202       $now = time();
 203       $midnight = $now - ($now % 86400) + 14400;
 204
 205       if ($midnight < $stamp) {
 206          // Today
 207          return date("g:i a", $stamp);
 208       } else if ($midnight - 604800 < $stamp) {
 209          // This week
 210          return date("D, g:i a", $stamp);
 211       } else {
 212          // before this week
 213          return date("M j, Y", $stamp);
 214       }
 215    }
 216
 217    function getTimeStamp($dateParts) {
 218       /** $dateParts[0] == <day of week>   Mon, Tue, Wed
 219        ** $dateParts[1] == <day of month>  23
 220        ** $dateParts[2] == <month>         Jan, Feb, Mar
 221        ** $dateParts[3] == <year>          1999
 222        ** $dateParts[4] == <time>          18:54:23 (HH:MM:SS)
 223        ** $dateParts[5] == <from GMT>      +0100
 224        ** $dateParts[6] == <zone>          (EDT)
 225        **
 226        ** NOTE:  In RFC 822, it states that <day of week> is optional.
 227        **        In that case, dateParts[0] would be the <day of month>
 228        **        and everything would be bumped up one.
 229        **/
 230
 231       // Simply check to see if the first element in the dateParts
 232       // array is an integer or not.
 233       //    Since the day of week is optional, this check is needed.
 234       //
 235       //    The old code used eregi("mon|tue|wed|thu|fri|sat|sun",
 236       //    $dateParts[0], $tmp) to find if the first element was the
 237       //    day of week or day of month. This is an expensive call
 238       //    (processing time) to have inside a loop. Doing it this way
 239       //    saves quite a bit of time for large mailboxes.
 240       //
 241       //    It is also quicker to call explode only once rather than
 242       //    the 3 times it was getting called by calling the functions
 243       //    getHour, getMinute, and getSecond.
 244       //
 245       if (intval(trim($dateParts[0])) > 0) {
 246          $time = explode(":", $dateParts[3]);
 247          $d[0] = $time[0];
 248          $d[1] = $time[1];
 249          $d[2] = $time[2];
 250          $d[3] = getMonthNum(trim($dateParts[1]));
 251          $d[4] = getDayOfMonth(trim($dateParts[0]));
 252          $d[5] = getYear(trim($dateParts[2]));
 253          return getGMTSeconds(mktime($d[0], $d[1], $d[2], $d[3], $d[4], $d[5]), $dateParts[4]);
 254       }
 255       $time = explode(":", $dateParts[4]);
 256       $d[0] = $time[0];
 257       $d[1] = $time[1];
 258       $d[2] = $time[2];
 259       $d[3] = getMonthNum(trim($dateParts[2]));
 260       $d[4] = getDayOfMonth(trim($dateParts[1]));
 261       $d[5] = getYear(trim($dateParts[3]));
 262       return getGMTSeconds(mktime($d[0], $d[1], $d[2], $d[3], $d[4], $d[5]), $dateParts[5]);
 263    }
 264
 265    // I use this function for profiling. Should never be called in
 266    // actual versions of squirrelmail released to public.
 267    function getmicrotime() {
 268       $mtime = microtime();
 269       $mtime = explode(" ",$mtime);
 270       $mtime = $mtime[1] + $mtime[0];
 271       return ($mtime);
 272    }
 273 ?>