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

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