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<?php $A = array(); $B = &$A[0]; $F = &$A[1]; echo is_null($B) . " " . is_null($F); $C = $A; $D = $A; $C[0] = $D[1]; $C[0] = 10; $D[1] = 20; echo $A[0] . ' ' . $A[1];
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/jJQLE
function name:  (null)
number of ops:  25
compiled vars:  !0 = $A, !1 = $B, !2 = $F, !3 = $C, !4 = $D
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        FETCH_DIM_W                                      $6      !0, 0
          2        ASSIGN_REF                                               !1, $6
    4     3        FETCH_DIM_W                                      $8      !0, 1
          4        ASSIGN_REF                                               !2, $8
    5     5        TYPE_CHECK                                    2  ~10     !1
          6        CONCAT                                           ~11     ~10, '+'
          7        TYPE_CHECK                                    2  ~12     !2
          8        CONCAT                                           ~13     ~11, ~12
          9        ECHO                                                     ~13
    6    10        ASSIGN                                                   !3, !0
    7    11        ASSIGN                                                   !4, !0
    8    12        FETCH_DIM_R                                      ~17     !4, 1
         13        ASSIGN_DIM                                               !3, 0
         14        OP_DATA                                                  ~17
   10    15        ASSIGN_DIM                                               !3, 0
         16        OP_DATA                                                  10
   11    17        ASSIGN_DIM                                               !4, 1
         18        OP_DATA                                                  20
   13    19        FETCH_DIM_R                                      ~20     !0, 0
         20        CONCAT                                           ~21     ~20, '+'
         21        FETCH_DIM_R                                      ~22     !0, 1
         22        CONCAT                                           ~23     ~21, ~22
         23        ECHO                                                     ~23
         24      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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