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<?php $cases = array(false, 0, 1, 2, 3, 4, 5, true, null); $result = array(); $ln = 10000; $s = microtime(true); for ($i = 0; $i < $ln; $i++) { foreach ($cases as $c) { $result[] = !!$c; } } var_dump('time : ' . (microtime(true) - $s) . ' for ' . $ln . ' times !!$c on each case, result:', $result); $s = microtime(true); for ($i = 0; $i < $ln; $i++) { foreach ($cases as $c) { $result[] = (bool)$c; } } var_dump('time : ' . (microtime(true) - $s) . ' for ' . $ln . ' times (bool)$c on each case, result:', $result);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 18
Branch analysis from position: 18
2 jumps found. (Code = 44) Position 1 = 20, Position 2 = 9
Branch analysis from position: 20
1 jumps found. (Code = 42) Position 1 = 46
Branch analysis from position: 46
2 jumps found. (Code = 44) Position 1 = 48, Position 2 = 38
Branch analysis from position: 48
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 38
2 jumps found. (Code = 77) Position 1 = 39, Position 2 = 44
Branch analysis from position: 39
2 jumps found. (Code = 78) Position 1 = 40, Position 2 = 44
Branch analysis from position: 40
1 jumps found. (Code = 42) Position 1 = 39
Branch analysis from position: 39
Branch analysis from position: 44
2 jumps found. (Code = 44) Position 1 = 48, Position 2 = 38
Branch analysis from position: 48
Branch analysis from position: 38
Branch analysis from position: 44
Branch analysis from position: 9
2 jumps found. (Code = 77) Position 1 = 10, Position 2 = 16
Branch analysis from position: 10
2 jumps found. (Code = 78) Position 1 = 11, Position 2 = 16
Branch analysis from position: 11
1 jumps found. (Code = 42) Position 1 = 10
Branch analysis from position: 10
Branch analysis from position: 16
2 jumps found. (Code = 44) Position 1 = 20, Position 2 = 9
Branch analysis from position: 20
Branch analysis from position: 9
Branch analysis from position: 16
filename:       /in/elWvn
function name:  (null)
number of ops:  61
compiled vars:  !0 = $cases, !1 = $result, !2 = $ln, !3 = $s, !4 = $i, !5 = $c
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, <array>
    3     1        ASSIGN                                                   !1, <array>
    5     2        ASSIGN                                                   !2, 10000
    6     3        INIT_FCALL                                               'microtime'
          4        SEND_VAL                                                 <true>
          5        DO_ICALL                                         $9      
          6        ASSIGN                                                   !3, $9
    7     7        ASSIGN                                                   !4, 0
          8      > JMP                                                      ->18
    9     9    > > FE_RESET_R                                       $12     !0, ->16
         10    > > FE_FETCH_R                                               $12, !5, ->16
   10    11    >   BOOL_NOT                                         ~14     !5
         12        BOOL_NOT                                         ~15     ~14
         13        ASSIGN_DIM                                               !1
         14        OP_DATA                                                  ~15
    9    15      > JMP                                                      ->10
         16    >   FE_FREE                                                  $12
    7    17        PRE_INC                                                  !4
         18    >   IS_SMALLER                                               !4, !2
         19      > JMPNZ                                                    ~17, ->9
   14    20    >   INIT_FCALL                                               'var_dump'
         21        INIT_FCALL                                               'microtime'
         22        SEND_VAL                                                 <true>
         23        DO_ICALL                                         $18     
         24        SUB                                              ~19     $18, !3
         25        CONCAT                                           ~20     'time+%3A+', ~19
         26        CONCAT                                           ~21     ~20, '+for+'
         27        CONCAT                                           ~22     ~21, !2
         28        CONCAT                                           ~23     ~22, '+times+%21%21%24c+on+each+case%2C+result%3A'
         29        SEND_VAL                                                 ~23
         30        SEND_VAR                                                 !1
         31        DO_ICALL                                                 
   16    32        INIT_FCALL                                               'microtime'
         33        SEND_VAL                                                 <true>
         34        DO_ICALL                                         $25     
         35        ASSIGN                                                   !3, $25
   17    36        ASSIGN                                                   !4, 0
         37      > JMP                                                      ->46
   19    38    > > FE_RESET_R                                       $28     !0, ->44
         39    > > FE_FETCH_R                                               $28, !5, ->44
   20    40    >   BOOL                                             ~30     !5
         41        ASSIGN_DIM                                               !1
         42        OP_DATA                                                  ~30
   19    43      > JMP                                                      ->39
         44    >   FE_FREE                                                  $28
   17    45        PRE_INC                                                  !4
         46    >   IS_SMALLER                                               !4, !2
         47      > JMPNZ                                                    ~32, ->38
   23    48    >   INIT_FCALL                                               'var_dump'
         49        INIT_FCALL                                               'microtime'
         50        SEND_VAL                                                 <true>
         51        DO_ICALL                                         $33     
         52        SUB                                              ~34     $33, !3
         53        CONCAT                                           ~35     'time+%3A+', ~34
         54        CONCAT                                           ~36     ~35, '+for+'
         55        CONCAT                                           ~37     ~36, !2
         56        CONCAT                                           ~38     ~37, '+times+%28bool%29%24c+on+each+case%2C+result%3A'
         57        SEND_VAL                                                 ~38
         58        SEND_VAR                                                 !1
         59        DO_ICALL                                                 
         60      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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