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<?php $datetimeStart1 = new DateTime('2017-05-16'); $datetimeEnd1 = new DateTime('2017-07-19'); $datetimeStart2 = new DateTime('2017-07-12'); $datetimeEnd2 = new DateTime('2017-07-22'); // following http://stackoverflow.com/questions/325933/determine-whether-two-date-ranges-overlap if ($datetimeStart1 < $datetimeEnd2 && $datetimeEnd1 > $datetimeStart2) { echo min($datetimeEnd1,$datetimeEnd2)->diff(max($datetimeStart2,$datetimeStart1))->days+1; } else { echo 'no overlap'; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 46) Position 1 = 18, Position 2 = 20
Branch analysis from position: 18
2 jumps found. (Code = 43) Position 1 = 21, Position 2 = 36
Branch analysis from position: 21
1 jumps found. (Code = 42) Position 1 = 37
Branch analysis from position: 37
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 36
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 20
filename:       /in/q1mG2
function name:  (null)
number of ops:  38
compiled vars:  !0 = $datetimeStart1, !1 = $datetimeEnd1, !2 = $datetimeStart2, !3 = $datetimeEnd2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   NEW                                              $4      'DateTime'
          1        SEND_VAL_EX                                              '2017-05-16'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $4
    4     4        NEW                                              $7      'DateTime'
          5        SEND_VAL_EX                                              '2017-07-19'
          6        DO_FCALL                                      0          
          7        ASSIGN                                                   !1, $7
    6     8        NEW                                              $10     'DateTime'
          9        SEND_VAL_EX                                              '2017-07-12'
         10        DO_FCALL                                      0          
         11        ASSIGN                                                   !2, $10
    7    12        NEW                                              $13     'DateTime'
         13        SEND_VAL_EX                                              '2017-07-22'
         14        DO_FCALL                                      0          
         15        ASSIGN                                                   !3, $13
   10    16        IS_SMALLER                                       ~16     !0, !3
         17      > JMPZ_EX                                          ~16     ~16, ->20
         18    >   IS_SMALLER                                       ~17     !2, !1
         19        BOOL                                             ~16     ~17
         20    > > JMPZ                                                     ~16, ->36
   11    21    >   INIT_FCALL                                               'min'
         22        SEND_VAR                                                 !1
         23        SEND_VAR                                                 !3
         24        DO_ICALL                                         $18     
         25        INIT_METHOD_CALL                                         $18, 'diff'
         26        INIT_FCALL                                               'max'
         27        SEND_VAR                                                 !2
         28        SEND_VAR                                                 !0
         29        DO_ICALL                                         $19     
         30        SEND_VAR_NO_REF_EX                                       $19
         31        DO_FCALL                                      0  $20     
         32        FETCH_OBJ_R                                      ~21     $20, 'days'
         33        ADD                                              ~22     ~21, 1
         34        ECHO                                                     ~22
         35      > JMP                                                      ->37
   13    36    >   ECHO                                                     'no+overlap'
   14    37    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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