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<?php $primes = array(); for ($x = 2; $x <= 1000; $x++) { $xIsPrime = TRUE; $sqrtX = sqrt($x); foreach ($primes as $prime) if ($prime > $sqrtX || ((!($x % $prime)) && (!$xIsPrime = FALSE))) break; if ($xIsPrime) echo ($primes[] = $x) . "<br>"; }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 29
Branch analysis from position: 29
2 jumps found. (Code = 44) Position 1 = 31, Position 2 = 3
Branch analysis from position: 31
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 3
2 jumps found. (Code = 77) Position 1 = 9, Position 2 = 22
Branch analysis from position: 9
2 jumps found. (Code = 78) Position 1 = 10, Position 2 = 22
Branch analysis from position: 10
2 jumps found. (Code = 47) Position 1 = 12, Position 2 = 19
Branch analysis from position: 12
2 jumps found. (Code = 46) Position 1 = 15, Position 2 = 18
Branch analysis from position: 15
2 jumps found. (Code = 43) Position 1 = 20, Position 2 = 21
Branch analysis from position: 20
1 jumps found. (Code = 42) Position 1 = 22
Branch analysis from position: 22
2 jumps found. (Code = 43) Position 1 = 24, Position 2 = 28
Branch analysis from position: 24
2 jumps found. (Code = 44) Position 1 = 31, Position 2 = 3
Branch analysis from position: 31
Branch analysis from position: 3
Branch analysis from position: 28
Branch analysis from position: 21
1 jumps found. (Code = 42) Position 1 = 9
Branch analysis from position: 9
Branch analysis from position: 18
Branch analysis from position: 19
Branch analysis from position: 22
Branch analysis from position: 22
filename:       /in/m2nf0
function name:  (null)
number of ops:  32
compiled vars:  !0 = $primes, !1 = $x, !2 = $xIsPrime, !3 = $sqrtX, !4 = $prime
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN                                                   !1, 2
          2      > JMP                                                      ->29
    5     3    >   ASSIGN                                                   !2, <true>
    6     4        INIT_FCALL                                               'sqrt'
          5        SEND_VAR                                                 !1
          6        DO_ICALL                                         $8      
          7        ASSIGN                                                   !3, $8
    7     8      > FE_RESET_R                                       $10     !0, ->22
          9    > > FE_FETCH_R                                               $10, !4, ->22
         10    >   IS_SMALLER                                       ~11     !3, !4
         11      > JMPNZ_EX                                         ~11     ~11, ->19
         12    >   MOD                                              ~12     !1, !4
         13        BOOL_NOT                                         ~13     ~12
         14      > JMPZ_EX                                          ~13     ~13, ->18
         15    >   ASSIGN                                           ~14     !2, <false>
         16        BOOL_NOT                                         ~15     ~14
         17        BOOL                                             ~13     ~15
         18    >   BOOL                                             ~11     ~13
         19    > > JMPZ                                                     ~11, ->21
         20    > > JMP                                                      ->22
         21    > > JMP                                                      ->9
         22    >   FE_FREE                                                  $10
    8    23      > JMPZ                                                     !2, ->28
         24    >   ASSIGN_DIM                                       ~16     !0
         25        OP_DATA                                                  !1
         26        CONCAT                                           ~17     ~16, '%3Cbr%3E'
         27        ECHO                                                     ~17
    4    28    >   PRE_INC                                                  !1
         29    >   IS_SMALLER_OR_EQUAL                                      !1, 1000
         30      > JMPNZ                                                    ~19, ->3
    9    31    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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