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<?php $arr=[ 'a' => [ 'b' => 3, ] ]; $arrCopy = $arr; $arrCopy['a']['b'] = 12; var_dump($arr); var_dump($arrCopy);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/qufjX
function name:  (null)
number of ops:  12
compiled vars:  !0 = $arr, !1 = $arrCopy
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, <array>
    8     1        ASSIGN                                                       !1, !0
    9     2        FETCH_DIM_W                                          $4      !1, 'a'
          3        ASSIGN_DIM                                                   $4, 'b'
          4        OP_DATA                                                      12
   10     5        INIT_FCALL                                                   'var_dump'
          6        SEND_VAR                                                     !0
          7        DO_ICALL                                                     
   11     8        INIT_FCALL                                                   'var_dump'
          9        SEND_VAR                                                     !1
         10        DO_ICALL                                                     
         11      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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