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<?php $array = [ [ 'case_code_id' => 1, 'parent_id' => 0, 'case_code' => 'Main A', 'sub_codes' => [ [ 'case_code_id' => 3, 'parent_id' => 1, 'case_code' => 'Sub A', 'sub_codes' => [ [ 'case_code_id' => 5, 'parent_id' => 3, 'case_code' => 'Sub Sub A', 'sub_codes' => [] ] ] ], [ 'case_code_id' => 4, 'parent_id' => 1, 'case_code' => 'Sub B', 'sub_codes' => [] ] ] ], [ 'case_code_id' => 2, 'parent_id' => 0, 'case_code' => 'Main B', 'sub_codes' => [] ] ]; function flatten(array $array): array { $result = []; foreach ($array as $v) { $subCode = $v['sub_codes']; unset($v['sub_codes']); array_push( $result, $v, ...flatten($subCode) ); } return $result; } var_export(flatten($array));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/rIfiJ
function name:  (null)
number of ops:  8
compiled vars:  !0 = $array
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   54     1        INIT_FCALL                                               'var_export'
          2        INIT_FCALL                                               'flatten'
          3        SEND_VAR                                                 !0
          4        DO_FCALL                                      0  $2      
          5        SEND_VAR                                                 $2
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Function flatten:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 17
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 17
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 17
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 17
filename:       /in/rIfiJ
function name:  flatten
number of ops:  22
compiled vars:  !0 = $array, !1 = $result, !2 = $v, !3 = $subCode
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   38     0  E >   RECV                                             !0      
   40     1        ASSIGN                                                   !1, <array>
   41     2      > FE_RESET_R                                       $5      !0, ->17
          3    > > FE_FETCH_R                                               $5, !2, ->17
   42     4    >   FETCH_DIM_R                                      ~6      !2, 'sub_codes'
          5        ASSIGN                                                   !3, ~6
   43     6        UNSET_DIM                                                !2, 'sub_codes'
   44     7        INIT_FCALL                                               'array_push'
   45     8        SEND_REF                                                 !1
   46     9        SEND_VAR                                                 !2
   47    10        INIT_FCALL_BY_NAME                                       'flatten'
         11        SEND_VAR_EX                                              !3
         12        DO_FCALL                                      0  $8      
         13        SEND_UNPACK                                              $8
         14        CHECK_UNDEF_ARGS                                         
   44    15        DO_ICALL                                                 
   41    16      > JMP                                                      ->3
         17    >   FE_FREE                                                  $5
   51    18        VERIFY_RETURN_TYPE                                       !1
         19      > RETURN                                                   !1
   52    20*       VERIFY_RETURN_TYPE                                       
         21*     > RETURN                                                   null

End of function flatten

Generated using Vulcan Logic Dumper, using php 8.0.0


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