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<?php error_reporting(-1); function gzdecode_filler( $data, $length = 0 ) { $fp = fopen( 'php://memory', 'r+' ); fwrite( $fp, $data ); fseek( $fp, 0 ); stream_filter_append( $fp, 'zlib.inflate', STREAM_FILTER_READ ); $length = (int)$length; $max = 32768 * strlen( $data ); $max = $length ? min( $length, $max ) : $max; $decoded = fread( $fp, $max + 1 ); if ( $decoded === false || strlen( $decoded ) > $max ) { return false; } return $decoded; } var_dump(gzdecode_filler(pack('H*', "1f8b08000000000000030bc94855282ccd4cce56482aca2fcf5348cbaf50c82acd2d2856c82f4b2d5228014ae72456552aa4e4a7eb0100e92590512c000000")));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/MiQZA
function name:  (null)
number of ops:  14
compiled vars:  none
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   3     0  E >   INIT_FCALL                                               'error_reporting'
         1        SEND_VAL                                                 -1
         2        DO_ICALL                                                 
  23     3        INIT_FCALL                                               'var_dump'
         4        INIT_FCALL                                               'gzdecode_filler'
         5        INIT_FCALL                                               'pack'
         6        SEND_VAL                                                 'H%2A'
         7        SEND_VAL                                                 '1f8b08000000000000030bc94855282ccd4cce56482aca2fcf5348cbaf50c82acd2d2856c82f4b2d5228014ae72456552aa4e4a7eb0100e92590512c000000'
         8        DO_ICALL                                         $1      
         9        SEND_VAR                                                 $1
        10        DO_FCALL                                      0  $2      
        11        SEND_VAR                                                 $2
        12        DO_ICALL                                                 
        13      > RETURN                                                   1

Function gzdecode_filler:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 26, Position 2 = 32
Branch analysis from position: 26
1 jumps found. (Code = 42) Position 1 = 33
Branch analysis from position: 33
2 jumps found. (Code = 47) Position 1 = 42, Position 2 = 45
Branch analysis from position: 42
2 jumps found. (Code = 43) Position 1 = 46, Position 2 = 47
Branch analysis from position: 46
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 47
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 45
Branch analysis from position: 32
2 jumps found. (Code = 47) Position 1 = 42, Position 2 = 45
Branch analysis from position: 42
Branch analysis from position: 45
filename:       /in/MiQZA
function name:  gzdecode_filler
number of ops:  49
compiled vars:  !0 = $data, !1 = $length, !2 = $fp, !3 = $max, !4 = $decoded
line     #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   5     0  E >   RECV                                             !0      
         1        RECV_INIT                                        !1      0
   6     2        INIT_FCALL                                               'fopen'
         3        SEND_VAL                                                 'php%3A%2F%2Fmemory'
         4        SEND_VAL                                                 'r%2B'
         5        DO_ICALL                                         $5      
         6        QM_ASSIGN                                                !2
   7     7        INIT_FCALL                                               'fwrite'
         8        SEND_VAR                                                 !2
         9        SEND_VAR                                                 !0
        10        DO_ICALL                                                 
   8    11        INIT_FCALL                                               'fseek'
        12        SEND_VAR                                                 !2
        13        SEND_VAL                                                 0
        14        DO_ICALL                                                 
   9    15        INIT_FCALL                                               'stream_filter_append'
        16        SEND_VAR                                                 !2
        17        SEND_VAL                                                 'zlib.inflate'
        18        SEND_VAL                                                 1
        19        DO_ICALL                                                 
  11    20        MAKE_REF                                         ~10     !1
        21        QM_ASSIGN                                                !1
  12    22        STRLEN                                           ~12     !0
        23        MUL                                              ~13     ~12, 32768
        24        QM_ASSIGN                                                !3
  13    25      > JMPZ                                                     !1, ->32
        26    >   INIT_FCALL                                               'min'
        27        SEND_VAR                                                 !1
        28        SEND_VAR                                                 !3
        29        DO_ICALL                                         $15     
        30        ASSIGN_BW_OR                                  0  ~16     $15
        31      > JMP                                                      ->33
        32    >   ASSIGN_BW_OR                                  0  ~16     !3
        33    >   QM_ASSIGN                                                !3
  15    34        INIT_FCALL                                               'fread'
        35        SEND_VAR                                                 !2
        36        ADD                                              ~18     !3, 1
        37        SEND_VAL                                                 ~18
        38        DO_ICALL                                         $19     
        39        QM_ASSIGN                                                !4
  16    40        IS_NOT_IDENTICAL                                 ~21     !4, <false>
        41      > JMPNZ_EX                                         ~21     ~21, ->45
        42    >   STRLEN                                           ~22     !4
        43        IS_SMALLER_OR_EQUAL                              ~23     !3, ~22
        44        BOOL                                             ~21     ~23
        45    > > JMPZ                                                     ~21, ->47
  17    46    > > RETURN                                                   <false>
  20    47    > > RETURN                                                   !4
  21    48*     > RETURN                                                   null

End of function gzdecode_filler

Generated using Vulcan Logic Dumper, using php 7.4.0