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<?php $f = fopen('/tmp', 'r'); var_dump($f); define('FOO_BAR', $f); var_dump(FOO_BAR);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/hNlDD
function name:  (null)
number of ops:  17
compiled vars:  !0 = $f
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                                   'fopen'
          1        SEND_VAL                                                     '%2Ftmp'
          2        SEND_VAL                                                     'r'
          3        DO_ICALL                                             $1      
          4        ASSIGN                                                       !0, $1
    4     5        INIT_FCALL                                                   'var_dump'
          6        SEND_VAR                                                     !0
          7        DO_ICALL                                                     
    6     8        INIT_FCALL                                                   'define'
          9        SEND_VAL                                                     'FOO_BAR'
         10        SEND_VAR                                                     !0
         11        DO_ICALL                                                     
    7    12        INIT_FCALL                                                   'var_dump'
         13        FETCH_CONSTANT                                       ~5      'FOO_BAR'
         14        SEND_VAL                                                     ~5
         15        DO_ICALL                                                     
         16      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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