functions/date.php

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