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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++) { $subsum = getCombinedSum($digits-1, $sum-$digit); $result[] = $digit.join('', $subsum); } return $result; } var_dump(getCombinedSum(2, 1));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/vAoqf
function name:  (null)
number of ops:  8
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   27     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'getcombinedsum'
          2        SEND_VAL                                                 2
          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 = 48
Branch analysis from position: 48
2 jumps found. (Code = 46) Position 1 = 50, Position 2 = 53
Branch analysis from position: 50
2 jumps found. (Code = 44) Position 1 = 54, Position 2 = 33
Branch analysis from position: 54
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 33
2 jumps found. (Code = 46) Position 1 = 50, Position 2 = 53
Branch analysis from position: 50
Branch analysis from position: 53
Branch analysis from position: 53
Branch analysis from position: 14
Branch analysis from position: 11
Branch analysis from position: 8
filename:       /in/vAoqf
function name:  getCombinedSum
number of ops:  56
compiled vars:  !0 = $digits, !1 = $sum, !2 = $result, !3 = $digit, !4 = $subsum
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
          1        RECV                                             !1      
    5     2        TYPE_CHECK                                   16  ~5      !0
          3        BOOL_NOT                                         ~6      ~5
          4      > JMPNZ_EX                                         ~6      ~6, ->8
          5    >   TYPE_CHECK                                   16  ~7      !1
          6        BOOL_NOT                                         ~8      ~7
          7        BOOL                                             ~6      ~8
          8    > > JMPNZ_EX                                         ~6      ~6, ->11
          9    >   IS_SMALLER                                       ~9      !0, 1
         10        BOOL                                             ~6      ~9
         11    > > JMPNZ_EX                                         ~6      ~6, ->14
         12    >   IS_SMALLER                                       ~10     !1, 0
         13        BOOL                                             ~6      ~10
         14    > > JMPZ                                                     ~6, ->19
    7    15    >   NEW                                              $11     'InvalidArgumentException'
         16        SEND_VAL_EX                                              'Invalid+numeric+format'
         17        DO_FCALL                                      0          
         18      > THROW                                         0          $11
    9    19    >   MUL                                              ~13     !0, 9
         20        IS_SMALLER                                               ~13, !1
         21      > JMPZ                                                     ~14, ->26
   11    22    >   NEW                                              $15     'LogicException'
         23        SEND_VAL_EX                                              'Sum+out+of+range'
         24        DO_FCALL                                      0          
         25      > THROW                                         0          $15
   13    26    >   IS_EQUAL                                                 !0, 1
         27      > JMPZ                                                     ~17, ->30
   15    28    >   INIT_ARRAY                                       ~18     !1
         29      > RETURN                                                   ~18
   17    30    >   ASSIGN                                                   !2, <array>
   18    31        ASSIGN                                                   !3, 0
         32      > JMP                                                      ->48
   20    33    >   INIT_FCALL_BY_NAME                                       'getCombinedSum'
         34        SUB                                              ~21     !0, 1
         35        SEND_VAL_EX                                              ~21
         36        SUB                                              ~22     !1, !3
         37        SEND_VAL_EX                                              ~22
         38        DO_FCALL                                      0  $23     
         39        ASSIGN                                                   !4, $23
   21    40        INIT_FCALL                                               'join'
         41        SEND_VAL                                                 ''
         42        SEND_VAR                                                 !4
         43        DO_ICALL                                         $26     
         44        CONCAT                                           ~27     !3, $26
         45        ASSIGN_DIM                                               !2
         46        OP_DATA                                                  ~27
   18    47        PRE_INC                                                  !3
         48    >   IS_SMALLER                                       ~29     !3, 10
         49      > JMPZ_EX                                          ~29     ~29, ->53
         50    >   SUB                                              ~30     !1, !3
         51        IS_SMALLER                                       ~31     0, ~30
         52        BOOL                                             ~29     ~31
         53    > > JMPNZ                                                    ~29, ->33
   23    54    > > RETURN                                                   !2
   24    55*     > RETURN                                                   null

End of function getcombinedsum

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
163.08 ms | 1403 KiB | 18 Q