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<?php $r = "<\/skid>/e%00"; $v = '<skid>phpversion()</skid>'; @preg_replace("/<skid>(.*?)$r<\/skid>/", '\\1', $v);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/J7s08
function name:  (null)
number of ops:  13
compiled vars:  !0 = $r, !1 = $v
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%3C%5C%2Fskid%3E%2Fe%2500'
    3     1        ASSIGN                                                   !1, '%3Cskid%3Ephpversion%28%29%3C%2Fskid%3E'
    4     2        BEGIN_SILENCE                                    ~4      
          3        INIT_FCALL                                               'preg_replace'
          4        ROPE_INIT                                     3  ~6      '%2F%3Cskid%3E%28.%2A%3F%29'
          5        ROPE_ADD                                      1  ~6      ~6, !0
          6        ROPE_END                                      2  ~5      ~6, '%3C%5C%2Fskid%3E%2F'
          7        SEND_VAL                                                 ~5
          8        SEND_VAL                                                 '%5C1'
          9        SEND_VAR                                                 !1
         10        DO_ICALL                                                 
         11        END_SILENCE                                              ~4
         12      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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