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<?php var_dump(isset($a)); $a = null; var_dump(isset($a));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/8mB8B
function name:  (null)
number of ops:  10
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'var_dump'
          1        ISSET_ISEMPTY_CV                                 ~1      !0
          2        SEND_VAL                                                 ~1
          3        DO_ICALL                                                 
    4     4        ASSIGN                                                   !0, null
    5     5        INIT_FCALL                                               'var_dump'
          6        ISSET_ISEMPTY_CV                                 ~4      !0
          7        SEND_VAL                                                 ~4
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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