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<?php $sanitized = '?my CSS+cl@ss#'; $sanitized = preg_replace( '/[^A-Za-z0-9_-\@]/', '', $sanitized ); var_dump( $sanitized );
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/rTUbL
function name:  (null)
number of ops:  11
compiled vars:  !0 = $sanitized
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%3Fmy+CSS%2Bcl%40ss%23'
    3     1        INIT_FCALL                                               'preg_replace'
          2        SEND_VAL                                                 '%2F%5B%5EA-Za-z0-9_-%5C%40%5D%2F'
          3        SEND_VAL                                                 ''
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $2      
          6        ASSIGN                                                   !0, $2
    4     7        INIT_FCALL                                               'var_dump'
          8        SEND_VAR                                                 !0
          9        DO_ICALL                                                 
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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