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<?php unset($_POST); var_dump(@filter_var( $a, FILTER_NULL_ON_FAILURE));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/OveOi
function name:  (null)
number of ops:  11
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   UNSET_VAR                                                '_POST'
    3     1        INIT_FCALL                                               'var_dump'
          2        BEGIN_SILENCE                                    ~1      
          3        INIT_FCALL                                               'filter_var'
          4        SEND_VAR                                                 !0
          5        SEND_VAL                                                 134217728
          6        DO_ICALL                                         $2      
          7        END_SILENCE                                              ~1
          8        SEND_VAR                                                 $2
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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