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<?php $ar = ['a','b','c']; $arr =& $ar; // both are now references foreach ($arr as $dummy) { $arr []= 'foo'; } var_dump($arr);
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 3, Position 2 = 7
Branch analysis from position: 3
2 jumps found. (Code = 78) Position 1 = 4, Position 2 = 7
Branch analysis from position: 4
1 jumps found. (Code = 42) Position 1 = 3
Branch analysis from position: 3
Branch analysis from position: 7
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 7
filename:       /in/DuEcf
function name:  (null)
number of ops:  12
compiled vars:  !0 = $ar, !1 = $arr, !2 = $dummy
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN_REF                                               !1, !0
    6     2      > FE_RESET_R                                       $5      !1, ->7
          3    > > FE_FETCH_R                                               $5, !2, ->7
    8     4    >   ASSIGN_DIM                                               !1
          5        OP_DATA                                                  'foo'
    6     6      > JMP                                                      ->3
          7    >   FE_FREE                                                  $5
   11     8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !1
         10        DO_ICALL                                                 
         11      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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