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<?php var_dump(@get_headers("http://djpw.cz"));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/NRXrI
function name:  (null)
number of ops:  9
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'var_dump'
          1        BEGIN_SILENCE                                    ~0      
          2        INIT_FCALL                                               'get_headers'
          3        SEND_VAL                                                 'http%3A%2F%2Fdjpw.cz'
          4        DO_ICALL                                         $1      
          5        END_SILENCE                                              ~0
          6        SEND_VAR                                                 $1
          7        DO_ICALL                                                 
          8      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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