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<?php function getCombinedSum($digits, $sum) { if(!is_int($digits) || !is_int($sum) || $digits<1 || $sum<0) { throw new InvalidArgumentException('Invalid numeric format'); } if($sum>9*$digits) { throw new LogicException('Sum out of range'); } if($digits==1) { return [$sum]; } $result = []; for($digit=0; $digit<10 && $sum-$digit>0; $digit++) { $result[] = $digit.join('',getCombinedSum($digits-1, $sum-$digit)); } return $result; } var_dump(getCombinedSum(3, 1));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/mUZBK
function name:  (null)
number of ops:  8
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   28     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'getcombinedsum'
          2        SEND_VAL                                                 3
          3        SEND_VAL                                                 1
          4        DO_FCALL                                      0  $0      
          5        SEND_VAR                                                 $0
          6        DO_ICALL                                                 
          7      > RETURN                                                   1

Function getcombinedsum:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 47) Position 1 = 5, Position 2 = 8
Branch analysis from position: 5
2 jumps found. (Code = 47) Position 1 = 9, Position 2 = 11
Branch analysis from position: 9
2 jumps found. (Code = 47) Position 1 = 12, Position 2 = 14
Branch analysis from position: 12
2 jumps found. (Code = 43) Position 1 = 15, Position 2 = 19
Branch analysis from position: 15
1 jumps found. (Code = 108) Position 1 = -2
Branch analysis from position: 19
2 jumps found. (Code = 43) Position 1 = 22, Position 2 = 26
Branch analysis from position: 22
1 jumps found. (Code = 108) Position 1 = -2
Branch analysis from position: 26
2 jumps found. (Code = 43) Position 1 = 28, Position 2 = 30
Branch analysis from position: 28
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 30
1 jumps found. (Code = 42) Position 1 = 47
Branch analysis from position: 47
2 jumps found. (Code = 46) Position 1 = 49, Position 2 = 52
Branch analysis from position: 49
2 jumps found. (Code = 44) Position 1 = 53, Position 2 = 33
Branch analysis from position: 53
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 33
2 jumps found. (Code = 46) Position 1 = 49, Position 2 = 52
Branch analysis from position: 49
Branch analysis from position: 52
Branch analysis from position: 52
Branch analysis from position: 14
Branch analysis from position: 11
Branch analysis from position: 8
filename:       /in/mUZBK
function name:  getCombinedSum
number of ops:  55
compiled vars:  !0 = $digits, !1 = $sum, !2 = $result, !3 = $digit
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
          1        RECV                                             !1      
    5     2        TYPE_CHECK                                   16  ~4      !0
          3        BOOL_NOT                                         ~5      ~4
          4      > JMPNZ_EX                                         ~5      ~5, ->8
          5    >   TYPE_CHECK                                   16  ~6      !1
          6        BOOL_NOT                                         ~7      ~6
          7        BOOL                                             ~5      ~7
          8    > > JMPNZ_EX                                         ~5      ~5, ->11
          9    >   IS_SMALLER                                       ~8      !0, 1
         10        BOOL                                             ~5      ~8
         11    > > JMPNZ_EX                                         ~5      ~5, ->14
         12    >   IS_SMALLER                                       ~9      !1, 0
         13        BOOL                                             ~5      ~9
         14    > > JMPZ                                                     ~5, ->19
    7    15    >   NEW                                              $10     'InvalidArgumentException'
         16        SEND_VAL_EX                                              'Invalid+numeric+format'
         17        DO_FCALL                                      0          
         18      > THROW                                         0          $10
    9    19    >   MUL                                              ~12     !0, 9
         20        IS_SMALLER                                               ~12, !1
         21      > JMPZ                                                     ~13, ->26
   11    22    >   NEW                                              $14     'LogicException'
         23        SEND_VAL_EX                                              'Sum+out+of+range'
         24        DO_FCALL                                      0          
         25      > THROW                                         0          $14
   13    26    >   IS_EQUAL                                                 !0, 1
         27      > JMPZ                                                     ~16, ->30
   15    28    >   INIT_ARRAY                                       ~17     !1
         29      > RETURN                                                   ~17
   17    30    >   ASSIGN                                                   !2, <array>
   18    31        ASSIGN                                                   !3, 0
         32      > JMP                                                      ->47
   21    33    >   INIT_FCALL                                               'join'
         34        SEND_VAL                                                 ''
         35        INIT_FCALL_BY_NAME                                       'getCombinedSum'
         36        SUB                                              ~21     !0, 1
         37        SEND_VAL_EX                                              ~21
         38        SUB                                              ~22     !1, !3
         39        SEND_VAL_EX                                              ~22
         40        DO_FCALL                                      0  $23     
         41        SEND_VAR                                                 $23
         42        DO_ICALL                                         $24     
         43        CONCAT                                           ~25     !3, $24
         44        ASSIGN_DIM                                               !2
         45        OP_DATA                                                  ~25
   18    46        PRE_INC                                                  !3
         47    >   IS_SMALLER                                       ~27     !3, 10
         48      > JMPZ_EX                                          ~27     ~27, ->52
         49    >   SUB                                              ~28     !1, !3
         50        IS_SMALLER                                       ~29     0, ~28
         51        BOOL                                             ~27     ~29
         52    > > JMPNZ                                                    ~27, ->33
   24    53    > > RETURN                                                   !2
   25    54*     > RETURN                                                   null

End of function getcombinedsum

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
152.94 ms | 1403 KiB | 18 Q