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<?php $sampleArray = [ ["id" => 0.1, "marks" => 2], ["id" => 0.2, "marks" => 4], ["id" => 0.3, "marks" => 1], ["id" => 1.1, "marks" => 6], ["id" => 1.2, "marks" => 0], ["id" => 1.3, "marks" => 8], ["id" => 2.1, "marks" => 7], ["id" => 2.2, "marks" => 12], ]; $result = []; foreach ($sampleArray as $row) { $result[$row['id']] = ($result[$row['id']] ?? 0) + $row['marks']; } var_export($result);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 14
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 14
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 14
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 14
filename:       /in/e6o1Q
function name:  (null)
number of ops:  19
compiled vars:  !0 = $sampleArray, !1 = $result, !2 = $row
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   14     1        ASSIGN                                                   !1, <array>
   15     2      > FE_RESET_R                                       $5      !0, ->14
          3    > > FE_FETCH_R                                               $5, !2, ->14
   16     4    >   FETCH_DIM_R                                      ~6      !2, 'id'
          5        FETCH_DIM_R                                      ~8      !2, 'id'
          6        FETCH_DIM_IS                                     ~9      !1, ~8
          7        COALESCE                                         ~10     ~9
          8        QM_ASSIGN                                        ~10     0
          9        FETCH_DIM_R                                      ~11     !2, 'marks'
         10        ADD                                              ~12     ~10, ~11
         11        ASSIGN_DIM                                               !1, ~6
         12        OP_DATA                                                  ~12
   15    13      > JMP                                                      ->3
         14    >   FE_FREE                                                  $5
   18    15        INIT_FCALL                                               'var_export'
         16        SEND_VAR                                                 !1
         17        DO_ICALL                                                 
         18      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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