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<?php $startOfWeek = '16-07-2017'; $endOfWeek = new DateTime($startOfWeek); var_dump($endOfWeek); $endOfWeekString = $endOfWeek->modify('+5 day')->format('d-m-Y'); function firstDayOfWeek($date) { $day = DateTime::createFromFormat('d-m-Y', $date); $day->setISODate((int)$day->format('o'), (int)$day->format('W'), 1); return $day->format('d-m-Y'); } var_dump(firstDayOfWeek($startOfWeek)); echo $endOfWeekString;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/PONuS
function name:  (null)
number of ops:  23
compiled vars:  !0 = $startOfWeek, !1 = $endOfWeek, !2 = $endOfWeekString
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '16-07-2017'
    4     1        NEW                                              $4      'DateTime'
          2        SEND_VAR_EX                                              !0
          3        DO_FCALL                                      0          
          4        ASSIGN                                                   !1, $4
    5     5        INIT_FCALL                                               'var_dump'
          6        SEND_VAR                                                 !1
          7        DO_ICALL                                                 
    6     8        INIT_METHOD_CALL                                         !1, 'modify'
          9        SEND_VAL_EX                                              '%2B5+day'
         10        DO_FCALL                                      0  $8      
         11        INIT_METHOD_CALL                                         $8, 'format'
         12        SEND_VAL_EX                                              'd-m-Y'
         13        DO_FCALL                                      0  $9      
         14        ASSIGN                                                   !2, $9
   16    15        INIT_FCALL                                               'var_dump'
         16        INIT_FCALL                                               'firstdayofweek'
         17        SEND_VAR                                                 !0
         18        DO_FCALL                                      0  $11     
         19        SEND_VAR                                                 $11
         20        DO_ICALL                                                 
   17    21        ECHO                                                     !2
         22      > RETURN                                                   1

Function firstdayofweek:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/PONuS
function name:  firstDayOfWeek
number of ops:  24
compiled vars:  !0 = $date, !1 = $day
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    8     0  E >   RECV                                             !0      
   10     1        INIT_STATIC_METHOD_CALL                                  'DateTime', 'createFromFormat'
          2        SEND_VAL                                                 'd-m-Y'
          3        SEND_VAR                                                 !0
          4        DO_FCALL                                      0  $2      
          5        ASSIGN                                                   !1, $2
   11     6        INIT_METHOD_CALL                                         !1, 'setISODate'
          7        INIT_METHOD_CALL                                         !1, 'format'
          8        SEND_VAL_EX                                              'o'
          9        DO_FCALL                                      0  $4      
         10        CAST                                          4  ~5      $4
         11        SEND_VAL_EX                                              ~5
         12        INIT_METHOD_CALL                                         !1, 'format'
         13        SEND_VAL_EX                                              'W'
         14        DO_FCALL                                      0  $6      
         15        CAST                                          4  ~7      $6
         16        SEND_VAL_EX                                              ~7
         17        SEND_VAL_EX                                              1
         18        DO_FCALL                                      0          
   13    19        INIT_METHOD_CALL                                         !1, 'format'
         20        SEND_VAL_EX                                              'd-m-Y'
         21        DO_FCALL                                      0  $9      
         22      > RETURN                                                   $9
   14    23*     > RETURN                                                   null

End of function firstdayofweek

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