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<?php function gap($g, $m, $n) { foreach (range($m, $n) as $num) { if ($isPrime = isPrime($num) && isset($firstPrime) && $num - $firstPrime == $g) { return [$firstPrime, $num]; } elseif ($isPrime) { $firstPrime = $num; } } return null; } function isPrime($num) { for ($n = 2; ($div = $num/$n) > $n; $n++) { if (is_int($div)) { return false; } } return true; } var_dump(gap(2, 100, 110));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/jNueF
function name:  (null)
number of ops:  9
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   23     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'gap'
          2        SEND_VAL                                                 2
          3        SEND_VAL                                                 100
          4        SEND_VAL                                                 110
          5        DO_FCALL                                      0  $0      
          6        SEND_VAR                                                 $0
          7        DO_ICALL                                                 
          8      > RETURN                                                   1

Function gap:
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 8, Position 2 = 29
Branch analysis from position: 8
2 jumps found. (Code = 78) Position 1 = 9, Position 2 = 29
Branch analysis from position: 9
2 jumps found. (Code = 46) Position 1 = 13, Position 2 = 15
Branch analysis from position: 13
2 jumps found. (Code = 46) Position 1 = 16, Position 2 = 19
Branch analysis from position: 16
2 jumps found. (Code = 43) Position 1 = 21, Position 2 = 26
Branch analysis from position: 21
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 26
2 jumps found. (Code = 43) Position 1 = 27, Position 2 = 28
Branch analysis from position: 27
1 jumps found. (Code = 42) Position 1 = 8
Branch analysis from position: 8
Branch analysis from position: 28
Branch analysis from position: 19
Branch analysis from position: 15
Branch analysis from position: 29
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 29
filename:       /in/jNueF
function name:  gap
number of ops:  32
compiled vars:  !0 = $g, !1 = $m, !2 = $n, !3 = $num, !4 = $isPrime, !5 = $firstPrime
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   RECV                                             !0      
          1        RECV                                             !1      
          2        RECV                                             !2      
    4     3        INIT_FCALL                                               'range'
          4        SEND_VAR                                                 !1
          5        SEND_VAR                                                 !2
          6        DO_ICALL                                         $6      
          7      > FE_RESET_R                                       $7      $6, ->29
          8    > > FE_FETCH_R                                               $7, !3, ->29
    5     9    >   INIT_FCALL_BY_NAME                                       'isPrime'
         10        SEND_VAR_EX                                              !3
         11        DO_FCALL                                      0  $8      
         12      > JMPZ_EX                                          ~9      $8, ->15
         13    >   ISSET_ISEMPTY_CV                                 ~10     !5
         14        BOOL                                             ~9      ~10
         15    > > JMPZ_EX                                          ~9      ~9, ->19
         16    >   SUB                                              ~11     !3, !5
         17        IS_EQUAL                                         ~12     !0, ~11
         18        BOOL                                             ~9      ~12
         19    >   ASSIGN                                           ~13     !4, ~9
         20      > JMPZ                                                     ~13, ->26
    6    21    >   INIT_ARRAY                                       ~14     !5
         22        ADD_ARRAY_ELEMENT                                ~14     !3
         23        FE_FREE                                                  $7
         24      > RETURN                                                   ~14
         25*       JMP                                                      ->28
    7    26    > > JMPZ                                                     !4, ->28
    8    27    >   ASSIGN                                                   !5, !3
    4    28    > > JMP                                                      ->8
         29    >   FE_FREE                                                  $7
   11    30      > RETURN                                                   null
   12    31*     > RETURN                                                   null

End of function gap

Function isprime:
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 7
Branch analysis from position: 7
2 jumps found. (Code = 44) Position 1 = 11, Position 2 = 3
Branch analysis from position: 11
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 3
2 jumps found. (Code = 43) Position 1 = 5, Position 2 = 6
Branch analysis from position: 5
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 6
2 jumps found. (Code = 44) Position 1 = 11, Position 2 = 3
Branch analysis from position: 11
Branch analysis from position: 3
filename:       /in/jNueF
function name:  isPrime
number of ops:  13
compiled vars:  !0 = $num, !1 = $n, !2 = $div
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
   14     0  E >   RECV                                             !0      
   15     1        ASSIGN                                                   !1, 2
          2      > JMP                                                      ->7
   16     3    >   TYPE_CHECK                                   16          !2
          4      > JMPZ                                                     ~4, ->6
   17     5    > > RETURN                                                   <false>
   15     6    >   PRE_INC                                                  !1
          7    >   DIV                                              ~6      !0, !1
          8        ASSIGN                                           ~7      !2, ~6
          9        IS_SMALLER                                               !1, ~7
         10      > JMPNZ                                                    ~8, ->3
   20    11    > > RETURN                                                   <true>
   21    12*     > RETURN                                                   null

End of function isprime

Generated using Vulcan Logic Dumper, using php 8.0.0


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171.6 ms | 1403 KiB | 18 Q