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php时间日期工具类的实现代码

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2016-07-25 08:56:041318parcourir
  2. /**
  3. * 功能：php时间与日期工具类
  4. * 编辑：bbs.it-home.org
  5. */
  6. DateTimeUtils::addDate('2013-12-01',1,'y');
  7. DateTimeUtils::getWeekDay('2013/10/01','/');
  8. DateTimeUtils::isLeapYear('2013');
  9. DateTimeUtils::timeFromNow(strtotime("2013-10-26 14:15:13"));
  10. class DateTimeUtils {
  11. /**
  12. * Checks for leap year, returns true if it is. No 2-digit year check. Also
  13. * handles julian calendar correctly.
  14. * @param integer $year year to check
  15. * @return boolean true if is leap year
  16. */
  17. public static function isLeapYear($year)
  18. {
  19. $year = self::digitCheck($year);
  20. if ($year % 4 != 0)
  21. return false;
  23. if ($year % 400 == 0)
  24. return true;
  25. // if gregorian calendar (>1582), century not-divisible by 400 is not leap
  26. else if ($year > 1582 && $year % 100 == 0)
  27. return false;
  28. return true;
  29. }
  31. /**
  32. * Fix 2-digit years. Works for any century.
  33. * Assumes that if 2-digit is more than 30 years in future, then previous century.
  34. * @param integer $y year
  35. * @return integer change two digit year into multiple digits
  36. */
  37. protected static function digitCheck($y)
  38. {
  39. if ($y $yr = (integer) date("Y");
  40. $century = (integer) ($yr /100);
  42. if ($yr%100 > 50) {
  43. $c1 = $century + 1;
  44. $c0 = $century;
  45. } else {
  46. $c1 = $century;
  47. $c0 = $century - 1;
  48. }
  49. $c1 *= 100;
  50. // if 2-digit year is less than 30 years in future, set it to this century
  51. // otherwise if more than 30 years in future, then we set 2-digit year to the prev century.
  52. if (($y + $c1) else $y = $y + $c0*100;
  53. }
  54. return $y;
  55. }
  57. /**
  58. * Returns 4-digit representation of the year.
  59. * @param integer $y year
  60. * @return integer 4-digit representation of the year
  61. */
  62. public static function get4DigitYear($y)
  63. {
  64. return self::digitCheck($y);
  65. }
  66. /**
  67. * Checks to see if the year, month, day are valid combination.
  68. * @param integer $y year
  69. * @param integer $m month
  70. * @param integer $d day
  71. * @return boolean true if valid date, semantic check only.
  72. */
  73. public static function isValidDate($y,$m,$d)
  74. {
  75. return checkdate($m, $d, $y);
  76. }
  78. public static function checkDate($date, $separator = "-") { //检查日期是否合法日期
  79. $dateArr = explode ($separator, $date);
  80. return self::isValidDate ($dateArr[0], $dateArr[1], $dateArr[2]);
  81. }
  82. /**
  83. * Checks to see if the hour, minute and second are valid.
  84. * @param integer $h hour
  85. * @param integer $m minute
  86. * @param integer $s second
  87. * @param boolean $hs24 whether the hours should be 0 through 23 (default) or 1 through 12.
  88. * @return boolean true if valid date, semantic check only.
  89. * @since 1.0.5
  90. */
  91. public static function isValidTime($h,$m,$s,$hs24=true)
  92. {
  93. if($hs24 && ($h 23) || !$hs24 && ($h 12)) return false;
  94. if($m > 59 || $m if($s > 59 || $s return true;
  95. }
  97. public static function checkTime($time, $separator = ":") { //检查时间是否合法时间
  98. $timeArr = explode($separator, $time);
  99. return self::isValidTime($timeArr[0], $timeArr[1],$timeArr[2]);
  100. }
  102. public static function addDate($date, $int, $unit = "d") { //日期的增加
  103. $value = array('y'=>'', 'm'=>'', 'd'=>'');
  104. $dateArr = explode ( "-", $date);
  105. if(array_key_exists($unit, $value)){
  106. $value[$unit] = $int;
  107. }else{
  108. return false;
  109. }
  110. return date ("Y-m-d", mktime (0, 0, 0, $dateArr[1] + $value['m'], $dateArr[2] + $value['d'], $dateArr[0] +$value['y']));
  111. }
  113. public static function addDateTime($date, $int, $unit = "d") { //日期的增加
  114. $value = array('y'=>'', 'm'=>'', 'd'=>'', 'h'=>'', 'i'=>'');
  115. $dateArr = preg_split ( "/-|\s|:/", $date);
  116. if(array_key_exists($unit, $value)){
  117. $value[$unit] = $int;
  118. }else{
  119. return false;
  120. }
  121. return date ("Y-m-d H:i:s", mktime($dateArr[3]+ $value['h'], $dateArr[4]+ $value['i'], $dateArr[5], $dateArr[1] + $value['m'], $dateArr[2] + $value['d'], $dateArr[0] + $value['y']));
  122. }
  124. public static function addDayTimestamp($ntime, $aday) { //取当前时间后几天，天数增加单位为1
  125. $dayst = 3600 * 24;
  126. $oktime = $ntime + ($aday * $dayst);
  127. return $oktime;
  128. }
  130. public static function dateDiff($begin, $end, $unit = "d") { //时间比较函数，返回两个日期相差几秒、几分钟、几小时或几天
  131. $diff = strtotime($end) - strtotime($begin);
  132. switch($unit)
  133. {
  134. case "y": $retval = bcdiv($diff, (60 * 60 * 24 * 365)); break;
  135. case "m": $retval = bcdiv($diff, (60 * 60 * 24 * 30)); break;
  136. case "w": $retval = bcdiv($diff, (60 * 60 * 24 * 7)); break;
  137. case "d": $retval = bcdiv($diff, (60 * 60 * 24)); break;
  138. case "h": $retval = bcdiv($diff, (60 * 60)); break;
  139. case "i": $retval = bcdiv($diff, 60); break;
  140. case "s": $retval = $diff; break;
  141. }
  142. return $retval;
  143. }
  145. public static function getWeekDay($date, $separator = "-") { //计算出给出的日期是星期几
  146. $dateArr = explode ($separator, $date);
  147. return date ("w", mktime ( 0, 0, 0, $dateArr[1], $dateArr[2], $dateArr[0]));
  148. }
  150. public static function timeFromNow($dateline) { //让日期显示为:XX天XX年以前
  151. if(empty($dateline)) return false;
  152. $seconds = time() - $dateline;
  153. if($seconds return "1分钟前";
  154. }elseif($seconds return floor($seconds/60)."分钟前";
  155. }elseif($seconds return floor($seconds/3600)."小时前";
  156. }elseif($seconds return date("昨天 H:i", $dateline)."";
  157. }else{
  158. return date('Y-m-d', $dateline);
  159. }
  160. }
  162. public static function transDateToChs($date) {
  163. if (empty ($date)) return '今日';
  164. date_default_timezone_set('PRC');
  165. $dates = date ('Y年m月d日', strtotime ($date));
  166. return $dates;
  167. }
  169. // 08/31/2004 => 2004-08-31
  170. public static function TransDateUI($datestr, $type = 'Y-m-d') {
  171. if ($datestr == Null)
  172. return Null;
  173. $target = $datestr;
  174. $arr_date = preg_split ( "/\//", $target);
  175. $monthstr = $arr_date[0];
  176. $daystr = $arr_date[1];
  177. $yearstr = $arr_date[2];
  178. $result = date ($type, mktime (0, 0, 0, $monthstr, $daystr, $yearstr));
  179. return $result;
  180. }
  182. // 12/20/2004 10:55 AM => 2004-12-20 10:55:00
  183. public static function TransDateTimeUI($datestr, $type = 'Y-m-d H:i:s') {
  184. if ($datestr == Null)
  185. return Null;
  186. $target = $datestr;
  187. $arr_date = preg_split ( "/\/|\s|:/", $target);
  188. $monthstr = $arr_date[0];
  189. $daystr = $arr_date[1];
  190. $yearstr = $arr_date[2];
  191. $hourstr = $arr_date[3];
  192. $minutesstr = $arr_date[4];
  193. $result = date ($type, mktime ($hourstr, $minutesstr, 0, $monthstr, $daystr, $yearstr));
  194. return $result;
  195. }
  196. }
  197. ?>
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