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<?= htmlspecialchars($_SERVER[PHP_SELF]) ?>
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/Pegof
function name:  (null)
number of ops:  8
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   1     0  E >   INIT_FCALL                                               'htmlspecialchars'
         1        FETCH_CONSTANT                                   ~1      'PHP_SELF'
         2        FETCH_R                      global              $0      '_SERVER'
         3        FETCH_DIM_R                                      $2      $0, ~1
         4        SEND_VAR                                                 $2
         5        DO_ICALL                                         $3      
         6        ECHO                                                     $3
         7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.3.0