PHP to determine whether a given two times in the same week, month, year

• To determine whether the same week

  date_default_timezone_set ( 'PRC' );
   // determine whether the same week, the principle: find one where the timestamp of the week Monday morning and Sunday 24.00 timestamp timestamp, if another time stamps within this range, then in the same week, the same week otherwise not 
  function getSameWeek ( $ pretime , $ AFTERTIME ) {
       $ monday = strtotime ( 'last catalog on Monday', $ pretime ); // from the current time stamp on a Monday timestamp $ pretime recent, if the current time $ pretime Monday, $ monday storage remains last Monday 
      // determine if the current time stamp is given on Monday it returns the current timestamp monday to $ 
      IF ( DATE ( 'w', $ pretime )) {
           $ Monday = $ PRETime ; 
      } 
      $ Sunday = $ Monday + 24 * 3600 *. 7; //Sun stamp 
      IF ( $ AFTERTIME > = $ Sunday ) {
           return  to false ; 
      } 
      
      IF ( $ AFTERTIME <= $ Monday ) {
           return  to false ; 
      } 
      return  to true ; 
  } 
  $ testWeek_start = strtotime ( '2019-8-19' );
   testWeek_end $ = strtotime ( '2019-8-18' );
   echo getSameWeek ( $ testWeek_start , $ testWeek_end ) 'in the same week':? 'not in the same week', '<br>';

   

• To determine whether the same month (use the above ideas can be implemented, but here the use of another idea)

  date_default_timezone_set ( 'a PRC' ); 
  
  function isSameMonth ( $ TIME1 , $ TIME2 ) 
  { 
      $ M1 = DATE ( 'Ym of', $ TIME1 );
       $ M2 = DATE ( 'Ym of', $ TIME2 );
       // year must be determined, or 2019-8 and 2020-8 will be considered in the same month 
      IF ( $ M1 == $ M2 ) {
           return  to true ; 
      } 
      return  to false ; 
  } 
  
  $ T1 = strtotime ( '2018-8-13' );
   $ T2 = strtotime( '2019-8-18' );
   echo isSameMonth ( $ T1 , $ T2 ) 'in the same month':? 'Not on the same month';

   

• On determination using a relatively simple determination dated idea, just the date in the '' m '' removed, the code will be omitted