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<?php $array = [ [ ["2011-11-18 00:00:00" => 'C'], ["2011-11-18 00:00:00" => 'I'], ["2011-11-18 00:00:00" => 'S'], ], [ ["2011-11-22 00:00:00" => 'C'], ["2011-11-22 00:00:00" => 'S'] ] ]; $result = []; foreach ($array as $set) { foreach ($set as $row) { foreach ($row as $k => $_) { $result[$k] = ($result[$k] ?? 0) + 1; } } } var_export($result);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 20
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 20
Branch analysis from position: 4
2 jumps found. (Code = 77) Position 1 = 5, Position 2 = 18
Branch analysis from position: 5
2 jumps found. (Code = 78) Position 1 = 6, Position 2 = 18
Branch analysis from position: 6
2 jumps found. (Code = 77) Position 1 = 7, Position 2 = 16
Branch analysis from position: 7
2 jumps found. (Code = 78) Position 1 = 8, Position 2 = 16
Branch analysis from position: 8
1 jumps found. (Code = 42) Position 1 = 7
Branch analysis from position: 7
Branch analysis from position: 16
1 jumps found. (Code = 42) Position 1 = 5
Branch analysis from position: 5
Branch analysis from position: 16
Branch analysis from position: 18
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 18
Branch analysis from position: 20
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 20
filename:       /in/rjqOh
function name:  (null)
number of ops:  25
compiled vars:  !0 = $array, !1 = $result, !2 = $set, !3 = $row, !4 = $_, !5 = $k
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   15     1        ASSIGN                                                   !1, <array>
   16     2      > FE_RESET_R                                       $8      !0, ->20
          3    > > FE_FETCH_R                                               $8, !2, ->20
   17     4    > > FE_RESET_R                                       $9      !2, ->18
          5    > > FE_FETCH_R                                               $9, !3, ->18
   18     6    > > FE_RESET_R                                       $10     !3, ->16
          7    > > FE_FETCH_R                                       ~11     $10, !4, ->16
          8    >   ASSIGN                                                   !5, ~11
   19     9        FETCH_DIM_IS                                     ~14     !1, !5
         10        COALESCE                                         ~15     ~14
         11        QM_ASSIGN                                        ~15     0
         12        ADD                                              ~16     ~15, 1
         13        ASSIGN_DIM                                               !1, !5
         14        OP_DATA                                                  ~16
   18    15      > JMP                                                      ->7
         16    >   FE_FREE                                                  $10
   17    17      > JMP                                                      ->5
         18    >   FE_FREE                                                  $9
   16    19      > JMP                                                      ->3
         20    >   FE_FREE                                                  $8
   23    21        INIT_FCALL                                               'var_export'
         22        SEND_VAR                                                 !1
         23        DO_ICALL                                                 
         24      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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