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<?php $openTimeslots = ['02-09-2021' => [ '8:00-10:00', '16:00-19:00'], '03-09-2021' => [ '7:00-10:00', '16:15-19:00', '14:00-16:00', '13:00-14:15'], '04-09-2021' => [ '7:15-10:00', '15:15-18:15', '18:30-18:45']]; function intersectTimeslots($timeslots1, $timeslots2) { $newTimeslots = []; foreach ($timeslots1 as $timeslot1) { [$start1, $finish1] = sscanf(str_replace(':', '', $timeslot1), "%d-%d"); foreach ($timeslots2 as $timeslot2) { [$start2, $finish2] = sscanf(str_replace(':', '', $timeslot2), "%d-%d"); $newStart = max($start1, $start2); $newFinish = min($finish1, $finish2); if ($newStart < $newFinish) { $newTimeslots[] = substr_replace($newStart, ':', -2, 0) . '-' . substr_replace($newFinish, ':', -2, 0); } } } return $newTimeslots; } $commonTimeslots = array_shift($openTimeslots); foreach ($openTimeslots as $timeslots) { $commonTimeslots = intersectTimeslots($commonTimeslots, $timeslots); } var_export($commonTimeslots);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 6, Position 2 = 13
Branch analysis from position: 6
2 jumps found. (Code = 78) Position 1 = 7, Position 2 = 13
Branch analysis from position: 7
1 jumps found. (Code = 42) Position 1 = 6
Branch analysis from position: 6
Branch analysis from position: 13
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 13
filename:       /in/CDi7g
function name:  (null)
number of ops:  18
compiled vars:  !0 = $openTimeslots, !1 = $commonTimeslots, !2 = $timeslots
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   27     1        INIT_FCALL                                               'array_shift'
          2        SEND_REF                                                 !0
          3        DO_ICALL                                         $4      
          4        ASSIGN                                                   !1, $4
   29     5      > FE_RESET_R                                       $6      !0, ->13
          6    > > FE_FETCH_R                                               $6, !2, ->13
   30     7    >   INIT_FCALL                                               'intersecttimeslots'
          8        SEND_VAR                                                 !1
          9        SEND_VAR                                                 !2
         10        DO_FCALL                                      0  $7      
         11        ASSIGN                                                   !1, $7
   29    12      > JMP                                                      ->6
         13    >   FE_FREE                                                  $6
   33    14        INIT_FCALL                                               'var_export'
         15        SEND_VAR                                                 !1
         16        DO_ICALL                                                 
         17      > RETURN                                                   1

Function intersecttimeslots:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 4, Position 2 = 66
Branch analysis from position: 4
2 jumps found. (Code = 78) Position 1 = 5, Position 2 = 66
Branch analysis from position: 5
2 jumps found. (Code = 77) Position 1 = 20, Position 2 = 64
Branch analysis from position: 20
2 jumps found. (Code = 78) Position 1 = 21, Position 2 = 64
Branch analysis from position: 21
2 jumps found. (Code = 43) Position 1 = 47, Position 2 = 63
Branch analysis from position: 47
1 jumps found. (Code = 42) Position 1 = 20
Branch analysis from position: 20
Branch analysis from position: 63
Branch analysis from position: 64
1 jumps found. (Code = 42) Position 1 = 4
Branch analysis from position: 4
Branch analysis from position: 64
Branch analysis from position: 66
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 66
filename:       /in/CDi7g
function name:  intersectTimeslots
number of ops:  69
compiled vars:  !0 = $timeslots1, !1 = $timeslots2, !2 = $newTimeslots, !3 = $timeslot1, !4 = $start1, !5 = $finish1, !6 = $timeslot2, !7 = $start2, !8 = $finish2, !9 = $newStart, !10 = $newFinish
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    9     0  E >   RECV                                             !0      
          1        RECV                                             !1      
   11     2        ASSIGN                                                   !2, <array>
   12     3      > FE_RESET_R                                       $12     !0, ->66
          4    > > FE_FETCH_R                                               $12, !3, ->66
   13     5    >   INIT_FCALL                                               'sscanf'
          6        INIT_FCALL                                               'str_replace'
          7        SEND_VAL                                                 '%3A'
          8        SEND_VAL                                                 ''
          9        SEND_VAR                                                 !3
         10        DO_ICALL                                         $13     
         11        SEND_VAR                                                 $13
         12        SEND_VAL                                                 '%25d-%25d'
         13        DO_ICALL                                         $14     
         14        FETCH_LIST_R                                     $15     $14, 0
         15        ASSIGN                                                   !4, $15
         16        FETCH_LIST_R                                     $17     $14, 1
         17        ASSIGN                                                   !5, $17
         18        FREE                                                     $14
   14    19      > FE_RESET_R                                       $19     !1, ->64
         20    > > FE_FETCH_R                                               $19, !6, ->64
   15    21    >   INIT_FCALL                                               'sscanf'
         22        INIT_FCALL                                               'str_replace'
         23        SEND_VAL                                                 '%3A'
         24        SEND_VAL                                                 ''
         25        SEND_VAR                                                 !6
         26        DO_ICALL                                         $20     
         27        SEND_VAR                                                 $20
         28        SEND_VAL                                                 '%25d-%25d'
         29        DO_ICALL                                         $21     
         30        FETCH_LIST_R                                     $22     $21, 0
         31        ASSIGN                                                   !7, $22
         32        FETCH_LIST_R                                     $24     $21, 1
         33        ASSIGN                                                   !8, $24
         34        FREE                                                     $21
   16    35        INIT_FCALL                                               'max'
         36        SEND_VAR                                                 !4
         37        SEND_VAR                                                 !7
         38        DO_ICALL                                         $26     
         39        ASSIGN                                                   !9, $26
   17    40        INIT_FCALL                                               'min'
         41        SEND_VAR                                                 !5
         42        SEND_VAR                                                 !8
         43        DO_ICALL                                         $28     
         44        ASSIGN                                                   !10, $28
   18    45        IS_SMALLER                                               !9, !10
         46      > JMPZ                                                     ~30, ->63
   19    47    >   INIT_FCALL                                               'substr_replace'
         48        SEND_VAR                                                 !9
         49        SEND_VAL                                                 '%3A'
         50        SEND_VAL                                                 -2
         51        SEND_VAL                                                 0
         52        DO_ICALL                                         $32     
         53        CONCAT                                           ~33     $32, '-'
   20    54        INIT_FCALL                                               'substr_replace'
         55        SEND_VAR                                                 !10
         56        SEND_VAL                                                 '%3A'
         57        SEND_VAL                                                 -2
         58        SEND_VAL                                                 0
         59        DO_ICALL                                         $34     
         60        CONCAT                                           ~35     ~33, $34
   19    61        ASSIGN_DIM                                               !2
   20    62        OP_DATA                                                  ~35
   14    63    > > JMP                                                      ->20
         64    >   FE_FREE                                                  $19
   12    65      > JMP                                                      ->4
         66    >   FE_FREE                                                  $12
   24    67      > RETURN                                                   !2
   25    68*     > RETURN                                                   null

End of function intersecttimeslots

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
139.6 ms | 1018 KiB | 21 Q