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<?php $key = "e\^1s&V)F|<\40MTIzNDU2cXdlcnQ="; echo base64_decode(substr($key,intval($key[0],16)));
Finding entry points
Branch analysis from position: 0
Jump found. Position 1 = -2
filename:       /in/Tv6Oc
function name:  (null)
number of ops:  15
compiled vars:  !0 = $key
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   2     0  E >   ASSIGN                                                   !0, 'e%5C%5E1s%26V%29F%7C%3C+MTIzNDU2cXdlcnQ%3D'
   3     1        INIT_FCALL                                               'base64_decode'
         2        INIT_FCALL                                               'substr'
         3        SEND_VAR                                                 !0
         4        INIT_FCALL                                               'intval'
         5        FETCH_DIM_R                                      $2      !0, 0
         6        SEND_VAR                                                 $2
         7        SEND_VAL                                                 16
         8        DO_ICALL                                         $3      
         9        SEND_VAR                                                 $3
        10        DO_ICALL                                         $4      
        11        SEND_VAR                                                 $4
        12        DO_ICALL                                         $5      
        13        ECHO                                                     $5
        14      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 7.3.0