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<?php $input= 9999999; function Prime($num) { if ($num < 2) return false; for ($i = 2; $i < $num; $i++) { if ($num % $i == 0) return false; } return true; } $callStartTime = microtime(true); for($i = $input; $i > 0; --$i) { if(Prime($i)){ echo $i; break; } } $callEndTime = microtime(true); $callTime = $callEndTime - $callStartTime; echo 'Call time was ', sprintf('%.4f',$callTime), " seconds", PHP_EOL;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 14
Branch analysis from position: 14
2 jumps found. (Code = 44) Position 1 = 16, Position 2 = 7
Branch analysis from position: 16
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 7
2 jumps found. (Code = 43) Position 1 = 11, Position 2 = 13
Branch analysis from position: 11
1 jumps found. (Code = 42) Position 1 = 16
Branch analysis from position: 16
Branch analysis from position: 13
2 jumps found. (Code = 44) Position 1 = 16, Position 2 = 7
Branch analysis from position: 16
Branch analysis from position: 7
filename:       /in/hdXNM
function name:  (null)
number of ops:  31
compiled vars:  !0 = $input, !1 = $callStartTime, !2 = $i, !3 = $callEndTime, !4 = $callTime
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 9999999
   19     1        INIT_FCALL                                               'microtime'
          2        SEND_VAL                                                 <true>
          3        DO_ICALL                                         $6      
          4        ASSIGN                                                   !1, $6
   21     5        ASSIGN                                                   !2, !0
          6      > JMP                                                      ->14
   22     7    >   INIT_FCALL                                               'prime'
          8        SEND_VAR                                                 !2
          9        DO_FCALL                                      0  $9      
         10      > JMPZ                                                     $9, ->13
   23    11    >   ECHO                                                     !2
   24    12      > JMP                                                      ->16
   21    13    >   PRE_DEC                                                  !2
         14    >   IS_SMALLER                                               0, !2
         15      > JMPNZ                                                    ~11, ->7
   28    16    >   INIT_FCALL                                               'microtime'
         17        SEND_VAL                                                 <true>
         18        DO_ICALL                                         $12     
         19        ASSIGN                                                   !3, $12
   29    20        SUB                                              ~14     !3, !1
         21        ASSIGN                                                   !4, ~14
   32    22        ECHO                                                     'Call+time+was+'
         23        INIT_FCALL                                               'sprintf'
         24        SEND_VAL                                                 '%25.4f'
         25        SEND_VAR                                                 !4
         26        DO_ICALL                                         $16     
         27        ECHO                                                     $16
         28        ECHO                                                     '+seconds'
         29        ECHO                                                     '%0A'
         30      > RETURN                                                   1

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

End of function prime

Generated using Vulcan Logic Dumper, using php 8.0.0


preferences:
156.38 ms | 1403 KiB | 18 Q