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

Generated using Vulcan Logic Dumper, using php 8.0.0


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