Php time and date tool implementation code

Php time and date tool implementation code

/** * Function: php time and date tool * Edit: bbs.it-home.org */ DateTimeUtils: addDate ('2017-12-01 ', 1, 'y '); DateTimeUtils: getWeekDay ('2014/1/01 ','/'); DateTimeUtils: isLeapYear ('20140901 '); DateTimeUtils: timeFromNow (strtotime ("14:15:13 ")); Class DateTimeUtils { /** * Checks for leap year, returns true if it is. No 2-digit year check. Also * Handles julian calendar correctly. * @ Param integer $ year to check * @ Return boolean true if is leap year */ Public static function isLeapYear ($ year) { $ Year = self: digitCheck ($ year ); If ($ year % 4! = 0) Return false; If ($ year % 400 = 0) Return true; // If gregorian calendar (> 1582), century not-pisible by 400 is not leap Else if ($ year> 1582 & $ year % 100 = 0) Return false; Return true; } /** * Fix 2-digit years. Works for any century. * Assumes that if 2-digit is more than 30 years in future, then previous century. * @ Param integer $ y year * @ Return integer change two digit year into multiple digits */ Protected static function digitCheck ($ y) { If ($ y <100 ){ $ Yr = (integer) date ("Y "); $ Century = (integer) ($ yr/100 ); If ($ yr % 100> 50 ){ $ C1 = $ century + 1; $ C0 = $ century; } Else { $ C1 = $ century; $ C0 = $ century-1; } $ C1 * = 100; // If 2-digit year is less than 30 years in future, set it to this century // Otherwise if more than 30 years in future, then we set 2-digit year to the prev century. If ($ y + $ c1) <$ yr + 30) $ y = $ y + $ c1; Else $ y = $ y + $ c0 * 100; } Return $ y; } /** * Returns 4-digit representation of the year. * @ Param integer $ y year * @ Return integer 4-digit representation of the year */ Public static function get4DigitYear ($ y) { Return self: digitCheck ($ y ); } /** * Checks to see if the year, month, day are valid combination. * @ Param integer $ y year * @ Param integer $ m month * @ Param integer $ d day * @ Return boolean true if valid date, semantic check only. */ Public static function isValidDate ($ y, $ m, $ d) { Return checkdate ($ m, $ d, $ y ); } Public static function checkDate ($ date, $ separator = "-") {// check whether the date is valid $ DateArr = explode ($ separator, $ date ); Return self: isValidDate ($ dateArr [0], $ dateArr [1], $ dateArr [2]); } /** * Checks to see if the hour, minute and second are valid. * @ Param integer $ h hour * @ Param integer $ m minute * @ Param integer $ s second * @ Param boolean $ hs24 whether the hours shocould be 0 through 23 (default) or 1 through 12. * @ Return boolean true if valid date, semantic check only. * @ Since 1.0.5 */ Public static function isValidTime ($ h, $ m, $ s, $ hs24 = true) { If ($ hs24 & ($ h <0 | $ h> 23) |! $ Hs24 & ($ h <1 | $ h> 12) return false; If ($ m> 59 | $ m <0) return false; If ($ s> 59 | $ s <0) return false; Return true; } Public static function checkTime ($ time, $ separator = ":") {// check whether the time is valid $ TimeArr = explode ($ separator, $ time ); Return self: isValidTime ($ timeArr [0], $ timeArr [1], $ timeArr [2]); } Public static function addDate ($ date, $ int, $ unit = "d") {// increase of date $ Value = array ('y' => '', 'M' =>'', 'D' => ''); $ DateArr = explode ("-", $ date ); If (array_key_exists ($ unit, $ value )){ $ Value [$ unit] = $ int; } Else { Return false; } Return date ("Y-m-d", mktime (0, 0, 0, $ dateArr [1] + $ value ['M'], $ dateArr [2] + $ value ['D'], $ dateArr [0] + $ value ['Y']); } Public static function addDateTime ($ date, $ int, $ unit = "d") {// increase of date $ Value = array ('y' => '', 'M' =>'', 'D' => '', 'H' => '', 'I' => ''); $ DateArr = preg_split ("/-| \ s |:/", $ date ); If (array_key_exists ($ unit, $ value )){ $ Value [$ unit] = $ int; } Else { Return false; } Return date ("Y-m-d H: I: s", mktime ($ dateArr [3] + $ value ['H'], $ dateArr [4] + $ value ['I'], $ dateArr [5], $ dateArr [1] + $ value ['M'], $ dateArr [2] + $ value ['D'], $ dateArr [0] + $ value ['Y']); } Public static function addDayTimestamp ($ ntime, $ aday) {// obtains the number of days after the current time. the unit of the number of days is 1. $ Dayst = 3600*24; $ Oktime = $ ntime + ($ aday * $ dayst ); Return $ oktime; } Public static function dateDiff ($ begin, $ end, $ unit = "d") {// Time comparison function, returns the seconds, minutes, hours, or days of difference between two dates $ Diff = strtotime ($ end)-strtotime ($ begin ); Switch ($ unit) { Case "y": $ retval = bcp ($ diff, (60*60*24*365); break; Case "m": $ retval = bcp ($ diff, (60*60*24*30); break; Case "w": $ retval = bcp ($ diff, (60*60*24*7); break; Case "d": $ retval = bcp ($ diff, (60*60*24); break; Case "h": $ retval = bcp ($ diff, (60*60); break; Case "I": $ retval = bcp ($ diff, 60); break; Case "s": $ retval = $ diff; break; } Return $ retval; } Public static function getWeekDay ($ date, $ separator = "-") {// calculate the day of the week $ DateArr = explode ($ separator, $ date ); Return date ("w", mktime (0, 0, 0, $ dateArr [1], $ dateArr [2], $ dateArr [0]); } Public static function timeFromNow ($ dateline) {// display the date as: XX days before XX years If (empty ($ dateline) return false; $ Seconds = time ()-$ dateline; If ($ seconds <60 ){ Return "1 minute ago "; } Elseif ($ seconds <3600 ){ Return floor ($ seconds/60). "minutes ago "; } Elseif ($ seconds <24*3600 ){ Return floor ($ seconds/3600). "hours ago "; } Elseif ($ seconds <48*3600 ){ Return date ("yesterday H: I", $ dateline ).""; } Else { Return date ('Y-m-D', $ dateline ); } } Public static function transDateToChs ($ date ){ If (empty ($ date) return 'Today '; Date_default_timezone_set ('prc '); $ Dates = date ('y, m, dday', strtotime ($ date )); Return $ dates; } // 08/31/2004 => 2004-08-31 Public static function TransDateUI ($ datestr, $ type = 'Y-m-D '){ If ($ datestr = Null) Return Null; $ Target = $ datestr; $ Arr_date = preg_split ("//", $ target ); $ Monthstr = $ arr_date [0]; $ Daystr = $ arr_date [1]; $ Yearstr = $ arr_date [2]; $ Result = date ($ type, mktime (0, 0, 0, $ monthstr, $ daystr, $ yearstr )); Return $ result; } // 12/20/2004 10:55:00 AM => Public static function TransDateTimeUI ($ datestr, $ type = 'Y-m-d H: I: s '){ If ($ datestr = Null) Return Null; $ Target = $ datestr; $ Arr_date = preg_split ("// | \ s |:/", $ target ); $ Monthstr = $ arr_date [0]; $ Daystr = $ arr_date [1]; $ Yearstr = $ arr_date [2]; $ Hourstr = $ arr_date [3]; $ Minutesstr = $ arr_date [4]; $ Result = date ($ type, mktime ($ hourstr, $ minutesstr, 0, $ monthstr, $ daystr, $ yearstr )); Return $ result; } } ?>