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<?php $stuff = ['a' => ['b' => 'c']]; $path = 'a.b'; $parts = explode('.', $path); $value = &$stuff; foreach ($parts as $part) { if (isset($value[$part])) { $value = &$value[$part]; } else { throw new \RuntimeException('fail at: ' . $part); } } var_dump($stuff); var_dump($value);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 9, Position 2 = 21
Branch analysis from position: 9
2 jumps found. (Code = 78) Position 1 = 10, Position 2 = 21
Branch analysis from position: 10
2 jumps found. (Code = 43) Position 1 = 12, Position 2 = 15
Branch analysis from position: 12
1 jumps found. (Code = 42) Position 1 = 20
Branch analysis from position: 20
1 jumps found. (Code = 42) Position 1 = 9
Branch analysis from position: 9
Branch analysis from position: 15
1 jumps found. (Code = 108) Position 1 = -2
Branch analysis from position: 21
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 21
filename:       /in/fngtn
function name:  (null)
number of ops:  29
compiled vars:  !0 = $stuff, !1 = $path, !2 = $parts, !3 = $value, !4 = $part
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN                                                   !1, 'a.b'
    5     2        INIT_FCALL                                               'explode'
          3        SEND_VAL                                                 '.'
          4        SEND_VAR                                                 !1
          5        DO_ICALL                                         $7      
          6        ASSIGN                                                   !2, $7
    6     7        ASSIGN_REF                                               !3, !0
    8     8      > FE_RESET_R                                       $10     !2, ->21
          9    > > FE_FETCH_R                                               $10, !4, ->21
    9    10    >   ISSET_ISEMPTY_DIM_OBJ                         0          !3, !4
         11      > JMPZ                                                     ~11, ->15
   10    12    >   FETCH_DIM_W                                      $12     !3, !4
         13        ASSIGN_REF                                               !3, $12
         14      > JMP                                                      ->20
   13    15    >   NEW                                              $14     'RuntimeException'
         16        CONCAT                                           ~15     'fail+at%3A+', !4
         17        SEND_VAL_EX                                              ~15
         18        DO_FCALL                                      0          
         19      > THROW                                         0          $14
    8    20    > > JMP                                                      ->9
         21    >   FE_FREE                                                  $10
   16    22        INIT_FCALL                                               'var_dump'
         23        SEND_VAR                                                 !0
         24        DO_ICALL                                                 
   17    25        INIT_FCALL                                               'var_dump'
         26        SEND_VAR                                                 !3
         27        DO_ICALL                                                 
         28      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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