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<?php $example = [ ['text' => 'a', 'children' => [ ['text' => 'b'], ['text' => 'c'], ['text' => 'd', 'children' => [ ['text' => 'e'], ['text' => 'f'], ['text' => 'g', 'children' => [ ['text' => 'h'], ['text' => 'i'], ['text' => 'j'], ]], ['text' => 'k'], ['text' => 'l'], ['text' => 'm'], ]], ['text' => 'n'], ['text' => 'o'], ['text' => 'p'], ]] ]; function listElements(array $input, $depth = 0) { end($input); $final = key($input); $n = count($input); foreach ($input as $key => $element) { echo $element['text']; echo ($key == $final) ? " last of $n," : ''; echo " depth $depth", PHP_EOL; if (isset($element['children'])) { listElements($element['children'], $depth + 1); } } } listElements($example);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/J9fek
function name:  (null)
number of ops:  5
compiled vars:  !0 = $example
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
   40     1        INIT_FCALL                                               'listelements'
          2        SEND_VAR                                                 !0
          3        DO_FCALL                                      0          
          4      > RETURN                                                   1

Function listelements:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 12, Position 2 = 39
Branch analysis from position: 12
2 jumps found. (Code = 78) Position 1 = 13, Position 2 = 39
Branch analysis from position: 13
2 jumps found. (Code = 43) Position 1 = 18, Position 2 = 23
Branch analysis from position: 18
1 jumps found. (Code = 42) Position 1 = 24
Branch analysis from position: 24
2 jumps found. (Code = 43) Position 1 = 31, Position 2 = 38
Branch analysis from position: 31
1 jumps found. (Code = 42) Position 1 = 12
Branch analysis from position: 12
Branch analysis from position: 38
Branch analysis from position: 23
2 jumps found. (Code = 43) Position 1 = 31, Position 2 = 38
Branch analysis from position: 31
Branch analysis from position: 38
Branch analysis from position: 39
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 39
filename:       /in/J9fek
function name:  listElements
number of ops:  41
compiled vars:  !0 = $input, !1 = $depth, !2 = $final, !3 = $n, !4 = $element, !5 = $key
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   25     0  E >   RECV                                             !0      
          1        RECV_INIT                                        !1      0
   27     2        INIT_FCALL                                               'end'
          3        SEND_REF                                                 !0
          4        DO_ICALL                                                 
   28     5        INIT_FCALL                                               'key'
          6        SEND_VAR                                                 !0
          7        DO_ICALL                                         $7      
          8        ASSIGN                                                   !2, $7
   29     9        COUNT                                            ~9      !0
         10        ASSIGN                                                   !3, ~9
   30    11      > FE_RESET_R                                       $11     !0, ->39
         12    > > FE_FETCH_R                                       ~12     $11, !4, ->39
         13    >   ASSIGN                                                   !5, ~12
   31    14        FETCH_DIM_R                                      ~14     !4, 'text'
         15        ECHO                                                     ~14
   32    16        IS_EQUAL                                                 !5, !2
         17      > JMPZ                                                     ~15, ->23
         18    >   ROPE_INIT                                     3  ~17     '+last+of+'
         19        ROPE_ADD                                      1  ~17     ~17, !3
         20        ROPE_END                                      2  ~16     ~17, '%2C'
         21        QM_ASSIGN                                        ~19     ~16
         22      > JMP                                                      ->24
         23    >   QM_ASSIGN                                        ~19     ''
         24    >   ECHO                                                     ~19
   33    25        NOP                                                      
         26        FAST_CONCAT                                      ~20     '+depth+', !1
         27        ECHO                                                     ~20
         28        ECHO                                                     '%0A'
   34    29        ISSET_ISEMPTY_DIM_OBJ                         0          !4, 'children'
         30      > JMPZ                                                     ~21, ->38
   35    31    >   INIT_FCALL_BY_NAME                                       'listElements'
         32        CHECK_FUNC_ARG                                           
         33        FETCH_DIM_FUNC_ARG                               $22     !4, 'children'
         34        SEND_FUNC_ARG                                            $22
         35        ADD                                              ~23     !1, 1
         36        SEND_VAL_EX                                              ~23
         37        DO_FCALL                                      0          
   30    38    > > JMP                                                      ->12
         39    >   FE_FREE                                                  $11
   38    40      > RETURN                                                   null

End of function listelements

Generated using Vulcan Logic Dumper, using php 8.0.0


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