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<?php $a = array(3, 4); $b =& $a[0]; $c = $a; unset($b); $c[0] = 5; var_dump($a);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/751H6
function name:  (null)
number of ops:  11
compiled vars:  !0 = $a, !1 = $b, !2 = $c
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        FETCH_DIM_W                                      $4      !0, 0
          2        ASSIGN_REF                                               !1, $4
    4     3        ASSIGN                                                   !2, !0
    5     4        UNSET_CV                                                 !1
    6     5        ASSIGN_DIM                                               !2, 0
          6        OP_DATA                                                  5
    7     7        INIT_FCALL                                               'var_dump'
          8        SEND_VAR                                                 !0
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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