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<?php $payload = ';echo "foo";'; var_dump(\preg_replace("<[JQ4Go]>ei", $payload, "eC1tb3o="));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/p1iZO
function name:  (null)
number of ops:  10
compiled vars:  !0 = $payload
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, '%3Becho+%22foo%22%3B'
    5     1        INIT_FCALL                                               'var_dump'
          2        INIT_FCALL                                               'preg_replace'
          3        SEND_VAL                                                 '%3C%5BJQ4Go%5D%3Eei'
          4        SEND_VAR                                                 !0
          5        SEND_VAL                                                 'eC1tb3o%3D'
          6        DO_ICALL                                         $2      
          7        SEND_VAR                                                 $2
          8        DO_ICALL                                                 
          9      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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