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<?php $data = [ ["id" => 1, "begin" => "01/01", "diagnostic" => "a"], ["id" => 1, "begin" => "01/01", "diagnostic" => "b"], ["id" => 1, "begin" => "01/01", "diagnostic" => ""], ["id" => 1, "begin" => "02/02", "diagnostic" => "a"], ]; $result = []; foreach ($data as $row) { $compositeKey = $row['id'] . '-' . $row['begin']; if (!isset($result[$compositeKey])) { $result[$compositeKey] = $row; } elseif (strlen($row['diagnostic'])) { $result[$compositeKey]['diagnostic'] .= (strlen($result[$compositeKey]['diagnostic']) ? ', ' : '') . $row['diagnostic']; } } var_export(array_values($result));
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 31
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 31
Branch analysis from position: 4
2 jumps found. (Code = 43) Position 1 = 12, Position 2 = 15
Branch analysis from position: 12
1 jumps found. (Code = 42) Position 1 = 30
Branch analysis from position: 30
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 15
2 jumps found. (Code = 43) Position 1 = 18, Position 2 = 30
Branch analysis from position: 18
2 jumps found. (Code = 43) Position 1 = 22, Position 2 = 24
Branch analysis from position: 22
1 jumps found. (Code = 42) Position 1 = 25
Branch analysis from position: 25
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 24
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 30
Branch analysis from position: 31
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 31
filename:       /in/ITq52
function name:  (null)
number of ops:  39
compiled vars:  !0 = $data, !1 = $result, !2 = $row, !3 = $compositeKey
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   10     1        ASSIGN                                                   !1, <array>
   11     2      > FE_RESET_R                                       $6      !0, ->31
          3    > > FE_FETCH_R                                               $6, !2, ->31
   12     4    >   FETCH_DIM_R                                      ~7      !2, 'id'
          5        CONCAT                                           ~8      ~7, '-'
          6        FETCH_DIM_R                                      ~9      !2, 'begin'
          7        CONCAT                                           ~10     ~8, ~9
          8        ASSIGN                                                   !3, ~10
   13     9        ISSET_ISEMPTY_DIM_OBJ                         0  ~12     !1, !3
         10        BOOL_NOT                                         ~13     ~12
         11      > JMPZ                                                     ~13, ->15
   14    12    >   ASSIGN_DIM                                               !1, !3
         13        OP_DATA                                                  !2
   13    14      > JMP                                                      ->30
   15    15    >   FETCH_DIM_R                                      ~15     !2, 'diagnostic'
         16        STRLEN                                           ~16     ~15
         17      > JMPZ                                                     ~16, ->30
   16    18    >   FETCH_DIM_R                                      ~19     !1, !3
         19        FETCH_DIM_R                                      ~20     ~19, 'diagnostic'
         20        STRLEN                                           ~21     ~20
         21      > JMPZ                                                     ~21, ->24
         22    >   QM_ASSIGN                                        ~22     '%2C+'
         23      > JMP                                                      ->25
         24    >   QM_ASSIGN                                        ~22     ''
         25    >   FETCH_DIM_R                                      ~23     !2, 'diagnostic'
         26        CONCAT                                           ~24     ~22, ~23
         27        FETCH_DIM_RW                                     $17     !1, !3
         28        ASSIGN_DIM_OP                .=               8          $17, 'diagnostic'
         29        OP_DATA                                                  ~24
   11    30    > > JMP                                                      ->3
         31    >   FE_FREE                                                  $6
   19    32        INIT_FCALL                                               'var_export'
         33        INIT_FCALL                                               'array_values'
         34        SEND_VAR                                                 !1
         35        DO_ICALL                                         $25     
         36        SEND_VAR                                                 $25
         37        DO_ICALL                                                 
         38      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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