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<?php $primes = array(); $found = 0; for ($x = 2; $x <= 100000; $x++) { $xIsPrime = TRUE; $sqrtX = sqrt($x); foreach ($primes as $prime) if ($prime > $sqrtX || ((!($x % $prime)) && (!$xIsPrime = FALSE))) break; if ($xIsPrime) $found++; } echo $found;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 27
Branch analysis from position: 27
2 jumps found. (Code = 44) Position 1 = 29, Position 2 = 4
Branch analysis from position: 29
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 4
2 jumps found. (Code = 77) Position 1 = 10, Position 2 = 23
Branch analysis from position: 10
2 jumps found. (Code = 78) Position 1 = 11, Position 2 = 23
Branch analysis from position: 11
2 jumps found. (Code = 47) Position 1 = 13, Position 2 = 20
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 = 22
Branch analysis from position: 21
1 jumps found. (Code = 42) Position 1 = 23
Branch analysis from position: 23
2 jumps found. (Code = 43) Position 1 = 25, Position 2 = 26
Branch analysis from position: 25
2 jumps found. (Code = 44) Position 1 = 29, Position 2 = 4
Branch analysis from position: 29
Branch analysis from position: 4
Branch analysis from position: 26
Branch analysis from position: 22
1 jumps found. (Code = 42) Position 1 = 10
Branch analysis from position: 10
Branch analysis from position: 19
Branch analysis from position: 20
Branch analysis from position: 23
Branch analysis from position: 23
filename:       /in/HvtZL
function name:  (null)
number of ops:  31
compiled vars:  !0 = $primes, !1 = $found, !2 = $x, !3 = $xIsPrime, !4 = $sqrtX, !5 = $prime
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, <array>
    4     1        ASSIGN                                                   !1, 0
    5     2        ASSIGN                                                   !2, 2
          3      > JMP                                                      ->27
    6     4    >   ASSIGN                                                   !3, <true>
    7     5        INIT_FCALL                                               'sqrt'
          6        SEND_VAR                                                 !2
          7        DO_ICALL                                         $10     
          8        ASSIGN                                                   !4, $10
    8     9      > FE_RESET_R                                       $12     !0, ->23
         10    > > FE_FETCH_R                                               $12, !5, ->23
         11    >   IS_SMALLER                                       ~13     !4, !5
         12      > JMPNZ_EX                                         ~13     ~13, ->20
         13    >   MOD                                              ~14     !2, !5
         14        BOOL_NOT                                         ~15     ~14
         15      > JMPZ_EX                                          ~15     ~15, ->19
         16    >   ASSIGN                                           ~16     !3, <false>
         17        BOOL_NOT                                         ~17     ~16
         18        BOOL                                             ~15     ~17
         19    >   BOOL                                             ~13     ~15
         20    > > JMPZ                                                     ~13, ->22
         21    > > JMP                                                      ->23
         22    > > JMP                                                      ->10
         23    >   FE_FREE                                                  $12
    9    24      > JMPZ                                                     !3, ->26
         25    >   PRE_INC                                                  !1
    5    26    >   PRE_INC                                                  !2
         27    >   IS_SMALLER_OR_EQUAL                                      !2, 100000
         28      > JMPNZ                                                    ~20, ->4
   12    29    >   ECHO                                                     !1
         30      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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