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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'); $datetimeStart1 = DateTime::createFromFormat('Y-m-d','2017-05-16'); $datetimeEnd1 = DateTime::createFromFormat('Y-m-d','2017-07-19'); $datetimeStart2 = DateTime::createFromFormat('Y-m-d','2017-07-12'); $datetimeEnd2 = DateTime::createFromFormat('Y-m-d','2017-07-22'); // following http://stackoverflow.com/questions/325933/determine-whether-two-date-ranges-overlap if ($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 = 22, Position 2 = 24
Branch analysis from position: 22
2 jumps found. (Code = 43) Position 1 = 25, Position 2 = 40
Branch analysis from position: 25
1 jumps found. (Code = 42) Position 1 = 41
Branch analysis from position: 41
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 40
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 24
filename:       /in/BcMe8
function name:  (null)
number of ops:  42
compiled vars:  !0 = $datetimeStart1, !1 = $datetimeEnd1, !2 = $datetimeStart2, !3 = $datetimeEnd2
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   10     0  E >   INIT_STATIC_METHOD_CALL                                  'DateTime', 'createFromFormat'
          1        SEND_VAL                                                 'Y-m-d'
          2        SEND_VAL                                                 '2017-05-16'
          3        DO_FCALL                                      0  $4      
          4        ASSIGN                                                   !0, $4
   11     5        INIT_STATIC_METHOD_CALL                                  'DateTime', 'createFromFormat'
          6        SEND_VAL                                                 'Y-m-d'
          7        SEND_VAL                                                 '2017-07-19'
          8        DO_FCALL                                      0  $6      
          9        ASSIGN                                                   !1, $6
   13    10        INIT_STATIC_METHOD_CALL                                  'DateTime', 'createFromFormat'
         11        SEND_VAL                                                 'Y-m-d'
         12        SEND_VAL                                                 '2017-07-12'
         13        DO_FCALL                                      0  $8      
         14        ASSIGN                                                   !2, $8
   14    15        INIT_STATIC_METHOD_CALL                                  'DateTime', 'createFromFormat'
         16        SEND_VAL                                                 'Y-m-d'
         17        SEND_VAL                                                 '2017-07-22'
         18        DO_FCALL                                      0  $10     
         19        ASSIGN                                                   !3, $10
   18    20        IS_SMALLER                                       ~12     !0, !3
         21      > JMPZ_EX                                          ~12     ~12, ->24
         22    >   IS_SMALLER                                       ~13     !2, !1
         23        BOOL                                             ~12     ~13
         24    > > JMPZ                                                     ~12, ->40
   19    25    >   INIT_FCALL                                               'min'
         26        SEND_VAR                                                 !1
         27        SEND_VAR                                                 !3
         28        DO_ICALL                                         $14     
         29        INIT_METHOD_CALL                                         $14, 'diff'
         30        INIT_FCALL                                               'max'
         31        SEND_VAR                                                 !2
         32        SEND_VAR                                                 !0
         33        DO_ICALL                                         $15     
         34        SEND_VAR_NO_REF_EX                                       $15
         35        DO_FCALL                                      0  $16     
         36        FETCH_OBJ_R                                      ~17     $16, 'days'
         37        ADD                                              ~18     ~17, 1
         38        ECHO                                                     ~18
         39      > JMP                                                      ->41
   21    40    >   ECHO                                                     'no+overlap'
   22    41    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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