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<?php $datetimeStart1 = new DateTime('2015-12-10'); $datetimeStart1 = $datetimeStart1->format('U'); $datetimeEnd1 = new DateTime('2015-12-20'); $datetimeEnd1 = $datetimeEnd1->format('U'); $datetimeStart2 = new DateTime('2015-12-12'); $datetimeStart2 = $datetimeStart2->format('U'); $datetimeEnd2 = new DateTime('2015-12-28'); $datetimeEnd2 = $datetimeEnd2->format('U'); // following http://stackoverflow.com/questions/325933/determine-whether-two-date-ranges-overlap if ($datetimeStart1 < $datetimeEnd2 && $datetimeEnd1 > $datetimeStart2) { echo round( ((min($datetimeEnd1,$datetimeEnd2)) - (max($datetimeStart2,$datetimeStart1))) / (60*60*24)) + 1; } else { echo 'no overlap'; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 46) Position 1 = 34, Position 2 = 36
Branch analysis from position: 34
2 jumps found. (Code = 43) Position 1 = 37, Position 2 = 53
Branch analysis from position: 37
1 jumps found. (Code = 42) Position 1 = 54
Branch analysis from position: 54
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 53
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 36
filename:       /in/a1WLk
function name:  (null)
number of ops:  55
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                                              '2015-12-10'
          2        DO_FCALL                                      0          
          3        ASSIGN                                                   !0, $4
    4     4        INIT_METHOD_CALL                                         !0, 'format'
          5        SEND_VAL_EX                                              'U'
          6        DO_FCALL                                      0  $7      
          7        ASSIGN                                                   !0, $7
    5     8        NEW                                              $9      'DateTime'
          9        SEND_VAL_EX                                              '2015-12-20'
         10        DO_FCALL                                      0          
         11        ASSIGN                                                   !1, $9
    6    12        INIT_METHOD_CALL                                         !1, 'format'
         13        SEND_VAL_EX                                              'U'
         14        DO_FCALL                                      0  $12     
         15        ASSIGN                                                   !1, $12
    8    16        NEW                                              $14     'DateTime'
         17        SEND_VAL_EX                                              '2015-12-12'
         18        DO_FCALL                                      0          
         19        ASSIGN                                                   !2, $14
    9    20        INIT_METHOD_CALL                                         !2, 'format'
         21        SEND_VAL_EX                                              'U'
         22        DO_FCALL                                      0  $17     
         23        ASSIGN                                                   !2, $17
   10    24        NEW                                              $19     'DateTime'
         25        SEND_VAL_EX                                              '2015-12-28'
         26        DO_FCALL                                      0          
         27        ASSIGN                                                   !3, $19
   11    28        INIT_METHOD_CALL                                         !3, 'format'
         29        SEND_VAL_EX                                              'U'
         30        DO_FCALL                                      0  $22     
         31        ASSIGN                                                   !3, $22
   14    32        IS_SMALLER                                       ~24     !0, !3
         33      > JMPZ_EX                                          ~24     ~24, ->36
         34    >   IS_SMALLER                                       ~25     !2, !1
         35        BOOL                                             ~24     ~25
         36    > > JMPZ                                                     ~24, ->53
   15    37    >   INIT_FCALL                                               'round'
   16    38        INIT_FCALL                                               'min'
         39        SEND_VAR                                                 !1
         40        SEND_VAR                                                 !3
         41        DO_ICALL                                         $26     
         42        INIT_FCALL                                               'max'
         43        SEND_VAR                                                 !2
         44        SEND_VAR                                                 !0
         45        DO_ICALL                                         $27     
         46        SUB                                              ~28     $26, $27
         47        DIV                                              ~29     ~28, 86400
         48        SEND_VAL                                                 ~29
   15    49        DO_ICALL                                         $30     
   16    50        ADD                                              ~31     $30, 1
         51        ECHO                                                     ~31
   14    52      > JMP                                                      ->54
   18    53    >   ECHO                                                     'no+overlap'
   19    54    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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