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<?php $times = 10000; $var = null; $var = new stdClass(); $time1 = microtime(true); for ($i = 0; $i <= $times; $i++) { if (!$var instanceof stdClass) {} } $time1 = microtime(true) - $time1; //echo "Time using '!': $time1\n"; $time2 = microtime(true); for ($i = 0; $i <= $times; $i++) { if ($var === null) {} } $time2 = microtime(true) - $time2; //echo "Time using '===': $time2\n"; if ($time1 > $time2){ $p = (($time1-$time2)/$time2) * 100; //printf("'!== null' was faster by %.2f percent.", $p); printf("'=== null' was faster"); } else { $p = (($time2-$time1)/$time1) * 100; //printf("'instanceof' was faster by %.2f percent.", $p); printf("'!instanceof' was faster"); }
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 42) Position 1 = 15
Branch analysis from position: 15
2 jumps found. (Code = 44) Position 1 = 17, Position 2 = 11
Branch analysis from position: 17
1 jumps found. (Code = 42) Position 1 = 31
Branch analysis from position: 31
2 jumps found. (Code = 44) Position 1 = 33, Position 2 = 28
Branch analysis from position: 33
2 jumps found. (Code = 43) Position 1 = 40, Position 2 = 48
Branch analysis from position: 40
1 jumps found. (Code = 42) Position 1 = 55
Branch analysis from position: 55
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 48
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 28
2 jumps found. (Code = 43) Position 1 = 30, Position 2 = 30
Branch analysis from position: 30
2 jumps found. (Code = 44) Position 1 = 33, Position 2 = 28
Branch analysis from position: 33
Branch analysis from position: 28
Branch analysis from position: 30
Branch analysis from position: 11
2 jumps found. (Code = 43) Position 1 = 14, Position 2 = 14
Branch analysis from position: 14
2 jumps found. (Code = 44) Position 1 = 17, Position 2 = 11
Branch analysis from position: 17
Branch analysis from position: 11
Branch analysis from position: 14
filename:       /in/L7cnd
function name:  (null)
number of ops:  56
compiled vars:  !0 = $times, !1 = $var, !2 = $time1, !3 = $i, !4 = $time2, !5 = $p
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 10000
    5     1        ASSIGN                                                   !1, null
    6     2        NEW                                              $8      'stdClass'
          3        DO_FCALL                                      0          
          4        ASSIGN                                                   !1, $8
    8     5        INIT_FCALL                                               'microtime'
          6        SEND_VAL                                                 <true>
          7        DO_ICALL                                         $11     
          8        ASSIGN                                                   !2, $11
   10     9        ASSIGN                                                   !3, 0
         10      > JMP                                                      ->15
   11    11    >   INSTANCEOF                                       ~14     !1, 'stdClass'
         12        BOOL_NOT                                         ~15     ~14
         13      > JMPZ                                                     ~15, ->14
   10    14    >   PRE_INC                                                  !3
         15    >   IS_SMALLER_OR_EQUAL                                      !3, !0
         16      > JMPNZ                                                    ~17, ->11
   14    17    >   INIT_FCALL                                               'microtime'
         18        SEND_VAL                                                 <true>
         19        DO_ICALL                                         $18     
         20        SUB                                              ~19     $18, !2
         21        ASSIGN                                                   !2, ~19
   19    22        INIT_FCALL                                               'microtime'
         23        SEND_VAL                                                 <true>
         24        DO_ICALL                                         $21     
         25        ASSIGN                                                   !4, $21
   21    26        ASSIGN                                                   !3, 0
         27      > JMP                                                      ->31
   22    28    >   TYPE_CHECK                                    2          !1
         29      > JMPZ                                                     ~24, ->30
   21    30    >   PRE_INC                                                  !3
         31    >   IS_SMALLER_OR_EQUAL                                      !3, !0
         32      > JMPNZ                                                    ~26, ->28
   25    33    >   INIT_FCALL                                               'microtime'
         34        SEND_VAL                                                 <true>
         35        DO_ICALL                                         $27     
         36        SUB                                              ~28     $27, !4
         37        ASSIGN                                                   !4, ~28
   29    38        IS_SMALLER                                               !4, !2
         39      > JMPZ                                                     ~30, ->48
   30    40    >   SUB                                              ~31     !2, !4
         41        DIV                                              ~32     ~31, !4
         42        MUL                                              ~33     ~32, 100
         43        ASSIGN                                                   !5, ~33
   32    44        INIT_FCALL                                               'printf'
         45        SEND_VAL                                                 '%27%3D%3D%3D+null%27+was+faster'
         46        DO_ICALL                                                 
         47      > JMP                                                      ->55
   34    48    >   SUB                                              ~36     !4, !2
         49        DIV                                              ~37     ~36, !2
         50        MUL                                              ~38     ~37, 100
         51        ASSIGN                                                   !5, ~38
   36    52        INIT_FCALL                                               'printf'
         53        SEND_VAL                                                 '%27%21instanceof%27+was+faster'
         54        DO_ICALL                                                 
   37    55    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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