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<?php list($a,$a) = array(9,8,7); var_dump($a);
Finding entry points
Branch analysis from position: 0
Jump found. Position 1 = -2
filename:       /in/5nINS
function name:  (null)
number of ops:  8
compiled vars:  !0 = $a
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   FETCH_LIST                                       $1      <array>, 0
         1        ASSIGN                                                   !0, $1
         2        FETCH_LIST                                       $3      <array>, 1
         3        ASSIGN                                                   !0, $3
   4     4        INIT_FCALL                                               'var_dump'
         5        SEND_VAR                                                 !0
         6        DO_ICALL                                                 
         7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.3.0