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<?php $salt ='whatever_you_want'; $en= simple_encrypt('data'); echo simple_decrypt($en); function simple_encrypt($text) { global $salt; return trim(base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $salt, $text, MCRYPT_MODE_CBC, mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_CBC), MCRYPT_RAND)))); } function simple_decrypt($text) { global $salt; return trim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $salt, base64_decode($text), MCRYPT_MODE_CBC, mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_CBC), MCRYPT_RAND))); }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/g0FRh
function name:  (null)
number of ops:  10
compiled vars:  !0 = $salt, !1 = $en
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'whatever_you_want'
    4     1        INIT_FCALL_BY_NAME                                       'simple_encrypt'
          2        SEND_VAL_EX                                              'data'
          3        DO_FCALL                                      0  $3      
          4        ASSIGN                                                   !1, $3
    5     5        INIT_FCALL_BY_NAME                                       'simple_decrypt'
          6        SEND_VAR_EX                                              !1
          7        DO_FCALL                                      0  $5      
          8        ECHO                                                     $5
   16     9      > RETURN                                                   1

Function simple_encrypt:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/g0FRh
function name:  simple_encrypt
number of ops:  30
compiled vars:  !0 = $text, !1 = $salt
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    6     0  E >   RECV                                             !0      
    8     1        BIND_GLOBAL                                              !1, 'salt'
    9     2        INIT_FCALL                                               'trim'
          3        INIT_FCALL                                               'base64_encode'
          4        INIT_FCALL_BY_NAME                                       'mcrypt_encrypt'
          5        FETCH_CONSTANT                                   ~2      'MCRYPT_RIJNDAEL_256'
          6        SEND_VAL_EX                                              ~2
          7        SEND_VAR_EX                                              !1
          8        SEND_VAR_EX                                              !0
          9        FETCH_CONSTANT                                   ~3      'MCRYPT_MODE_CBC'
         10        SEND_VAL_EX                                              ~3
         11        INIT_FCALL_BY_NAME                                       'mcrypt_create_iv'
         12        INIT_FCALL_BY_NAME                                       'mcrypt_get_iv_size'
         13        FETCH_CONSTANT                                   ~4      'MCRYPT_RIJNDAEL_256'
         14        SEND_VAL_EX                                              ~4
         15        FETCH_CONSTANT                                   ~5      'MCRYPT_MODE_CBC'
         16        SEND_VAL_EX                                              ~5
         17        DO_FCALL                                      0  $6      
         18        SEND_VAR_NO_REF_EX                                       $6
         19        FETCH_CONSTANT                                   ~7      'MCRYPT_RAND'
         20        SEND_VAL_EX                                              ~7
         21        DO_FCALL                                      0  $8      
         22        SEND_VAR_NO_REF_EX                                       $8
         23        DO_FCALL                                      0  $9      
         24        SEND_VAR                                                 $9
         25        DO_ICALL                                         $10     
         26        SEND_VAR                                                 $10
         27        DO_ICALL                                         $11     
         28      > RETURN                                                   $11
   10    29*     > RETURN                                                   null

End of function simple_encrypt

Function simple_decrypt:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/g0FRh
function name:  simple_decrypt
number of ops:  30
compiled vars:  !0 = $text, !1 = $salt
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   12     0  E >   RECV                                             !0      
   14     1        BIND_GLOBAL                                              !1, 'salt'
   15     2        INIT_FCALL                                               'trim'
          3        INIT_FCALL_BY_NAME                                       'mcrypt_decrypt'
          4        FETCH_CONSTANT                                   ~2      'MCRYPT_RIJNDAEL_256'
          5        SEND_VAL_EX                                              ~2
          6        SEND_VAR_EX                                              !1
          7        INIT_FCALL                                               'base64_decode'
          8        SEND_VAR                                                 !0
          9        DO_ICALL                                         $3      
         10        SEND_VAR_NO_REF_EX                                       $3
         11        FETCH_CONSTANT                                   ~4      'MCRYPT_MODE_CBC'
         12        SEND_VAL_EX                                              ~4
         13        INIT_FCALL_BY_NAME                                       'mcrypt_create_iv'
         14        INIT_FCALL_BY_NAME                                       'mcrypt_get_iv_size'
         15        FETCH_CONSTANT                                   ~5      'MCRYPT_RIJNDAEL_256'
         16        SEND_VAL_EX                                              ~5
         17        FETCH_CONSTANT                                   ~6      'MCRYPT_MODE_CBC'
         18        SEND_VAL_EX                                              ~6
         19        DO_FCALL                                      0  $7      
         20        SEND_VAR_NO_REF_EX                                       $7
         21        FETCH_CONSTANT                                   ~8      'MCRYPT_RAND'
         22        SEND_VAL_EX                                              ~8
         23        DO_FCALL                                      0  $9      
         24        SEND_VAR_NO_REF_EX                                       $9
         25        DO_FCALL                                      0  $10     
         26        SEND_VAR                                                 $10
         27        DO_ICALL                                         $11     
         28      > RETURN                                                   $11
   16    29*     > RETURN                                                   null

End of function simple_decrypt

Generated using Vulcan Logic Dumper, using php 8.0.0


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171.5 ms | 1400 KiB | 19 Q