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<?php $z = 1; $mass['error'][$z] = 'foo'; echo $mass['error'][$z];
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/lsr9l
function name:  (null)
number of ops:  8
compiled vars:  !0 = $z, !1 = $mass
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 1
    4     1        FETCH_DIM_W                                      $3      !1, 'error'
          2        ASSIGN_DIM                                               $3, !0
          3        OP_DATA                                                  'foo'
    6     4        FETCH_DIM_R                                      ~5      !1, 'error'
          5        FETCH_DIM_R                                      ~6      ~5, !0
          6        ECHO                                                     ~6
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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