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<?php generate(); // FUNCTION function generate() { $digilist = "0123456789ABCDEFGHJKLMNPQRTUVWXY"; //now we generate a new random ID number using the substrings of the digitList string above for( $i = 0; $i < 300; $i++) { $id = NULL; $id .= substr($digilist, rand(3, 3), 1); //random number $id .= substr($digilist, rand(10, 31), 1); //then a letter $id .= substr($digilist, rand(10, 31), 1); //another letter $id .= substr($digilist, rand(1, 9), 1); //a number $id .= substr($digilist, rand(1, 9), 1); //and finally another number - simple :D $key = get_key( $id ); echo $id . ":" . $key . "\n"; } } function get_key( $id ) { $digilist = "0123456789ABCDEFGHJKLMNPQRTUVWXY"; //ok so now we need to generate an MD5 hash of our ID $hash = md5($id); //cycle through the hash 16 (length of key) times (in steps of 2 because each hex bytes is 2 digits long) $i = 0; $key = NULL; for ($i; $i < 32; $i+=2) { //here we convert the next hex value to an integer and perform a bitwise AND operation against '31' //31 is the highest substring value in our digit list. $nextdigit = hexdec(substr($hash, $i, 2)) & 31; //if 'i' is divisable by 8 (every 4 cycles) then we want to add "-" if ((($i % 8) == 0) && ($i > 0)) { $key .= "-".substr($digilist, $nextdigit, 1); } else { $key .= substr($digilist, $nextdigit, 1); } } return $key; }

Abusive script

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Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/sYMAX
function name:  (null)
number of ops:  3
compiled vars:  none
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL_BY_NAME                                           'generate'
          1        DO_FCALL                                          0          
   47     2      > RETURN                                                       1

Function generate:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 48
Branch analysis from position: 48
2 jumps found. (Code = 44) Position 1 = 50, Position 2 = 3
Branch analysis from position: 50
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 3
2 jumps found. (Code = 44) Position 1 = 50, Position 2 = 3
Branch analysis from position: 50
Branch analysis from position: 3
filename:       /in/sYMAX
function name:  generate
number of ops:  51
compiled vars:  !0 = $digilist, !1 = $i, !2 = $id, !3 = $key
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    7     0  E >   ASSIGN                                                       !0, '0123456789ABCDEFGHJKLMNPQRTUVWXY'
    9     1        ASSIGN                                                       !1, 0
          2      > JMP                                                          ->48
   11     3    >   ASSIGN                                                       !2, null
   12     4        INIT_FCALL                                                   'rand'
          5        SEND_VAL                                                     3
          6        SEND_VAL                                                     3
          7        DO_ICALL                                             $7      
          8        FRAMELESS_ICALL_3                substr              ~8      !0, $7
          9        OP_DATA                                                      1
         10        ASSIGN_OP                                         8          !2, ~8
   13    11        INIT_FCALL                                                   'rand'
         12        SEND_VAL                                                     10
         13        SEND_VAL                                                     31
         14        DO_ICALL                                             $10     
         15        FRAMELESS_ICALL_3                substr              ~11     !0, $10
         16        OP_DATA                                                      1
         17        ASSIGN_OP                                         8          !2, ~11
   14    18        INIT_FCALL                                                   'rand'
         19        SEND_VAL                                                     10
         20        SEND_VAL                                                     31
         21        DO_ICALL                                             $13     
         22        FRAMELESS_ICALL_3                substr              ~14     !0, $13
         23        OP_DATA                                                      1
         24        ASSIGN_OP                                         8          !2, ~14
   15    25        INIT_FCALL                                                   'rand'
         26        SEND_VAL                                                     1
         27        SEND_VAL                                                     9
         28        DO_ICALL                                             $16     
         29        FRAMELESS_ICALL_3                substr              ~17     !0, $16
         30        OP_DATA                                                      1
         31        ASSIGN_OP                                         8          !2, ~17
   16    32        INIT_FCALL                                                   'rand'
         33        SEND_VAL                                                     1
         34        SEND_VAL                                                     9
         35        DO_ICALL                                             $19     
         36        FRAMELESS_ICALL_3                substr              ~20     !0, $19
         37        OP_DATA                                                      1
         38        ASSIGN_OP                                         8          !2, ~20
   17    39        INIT_FCALL_BY_NAME                                           'get_key'
         40        SEND_VAR_EX                                                  !2
         41        DO_FCALL                                          0  $22     
         42        ASSIGN                                                       !3, $22
   18    43        CONCAT                                               ~24     !2, '%3A'
         44        CONCAT                                               ~25     ~24, !3
         45        CONCAT                                               ~26     ~25, '%0A'
         46        ECHO                                                         ~26
    9    47        PRE_INC                                                      !1
         48    >   IS_SMALLER                                                   !1, 300
         49      > JMPNZ                                                        ~28, ->3
   20    50    > > RETURN                                                       null

End of function generate

Function get_key:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 31
Branch analysis from position: 31
2 jumps found. (Code = 44) Position 1 = 33, Position 2 = 9
Branch analysis from position: 33
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 9
2 jumps found. (Code = 46) Position 1 = 19, Position 2 = 21
Branch analysis from position: 19
2 jumps found. (Code = 43) Position 1 = 22, Position 2 = 27
Branch analysis from position: 22
1 jumps found. (Code = 42) Position 1 = 30
Branch analysis from position: 30
2 jumps found. (Code = 44) Position 1 = 33, Position 2 = 9
Branch analysis from position: 33
Branch analysis from position: 9
Branch analysis from position: 27
2 jumps found. (Code = 44) Position 1 = 33, Position 2 = 9
Branch analysis from position: 33
Branch analysis from position: 9
Branch analysis from position: 21
filename:       /in/sYMAX
function name:  get_key
number of ops:  35
compiled vars:  !0 = $id, !1 = $digilist, !2 = $hash, !3 = $i, !4 = $key, !5 = $nextdigit
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
   21     0  E >   RECV                                                 !0      
   23     1        ASSIGN                                                       !1, '0123456789ABCDEFGHJKLMNPQRTUVWXY'
   25     2        INIT_FCALL                                                   'md5'
          3        SEND_VAR                                                     !0
          4        DO_ICALL                                             $7      
          5        ASSIGN                                                       !2, $7
   28     6        ASSIGN                                                       !3, 0
   29     7        ASSIGN                                                       !4, null
   30     8      > JMP                                                          ->31
   34     9    >   INIT_FCALL                                                   'hexdec'
         10        FRAMELESS_ICALL_3                substr              ~11     !2, !3
         11        OP_DATA                                                      2
         12        SEND_VAL                                                     ~11
         13        DO_ICALL                                             $12     
         14        BW_AND                                               ~13     $12, 31
         15        ASSIGN                                                       !5, ~13
   37    16        MOD                                                  ~15     !3, 8
         17        IS_EQUAL                                             ~16     ~15, 0
         18      > JMPZ_EX                                              ~16     ~16, ->21
         19    >   IS_SMALLER                                           ~17     0, !3
         20        BOOL                                                 ~16     ~17
         21    > > JMPZ                                                         ~16, ->27
   39    22    >   FRAMELESS_ICALL_3                substr              ~18     !1, !5
         23        OP_DATA                                                      1
         24        CONCAT                                               ~19     '-', ~18
         25        ASSIGN_OP                                         8          !4, ~19
   37    26      > JMP                                                          ->30
   43    27    >   FRAMELESS_ICALL_3                substr              ~21     !1, !5
         28        OP_DATA                                                      1
         29        ASSIGN_OP                                         8          !4, ~21
   30    30    >   ASSIGN_OP                                         1          !3, 2
         31    >   IS_SMALLER                                                   !3, 32
         32      > JMPNZ                                                        ~24, ->9
   46    33    > > RETURN                                                       !4
   47    34*     > RETURN                                                       null

End of function get_key

Generated using Vulcan Logic Dumper, using php 8.5.0


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195.36 ms | 3881 KiB | 16 Q