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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 = 35
Branch analysis from position: 35
2 jumps found. (Code = 44) Position 1 = 37, Position 2 = 32
Branch analysis from position: 37
2 jumps found. (Code = 43) Position 1 = 48, Position 2 = 57
Branch analysis from position: 48
1 jumps found. (Code = 42) Position 1 = 65
Branch analysis from position: 65
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 57
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 32
2 jumps found. (Code = 43) Position 1 = 34, Position 2 = 34
Branch analysis from position: 34
2 jumps found. (Code = 44) Position 1 = 37, Position 2 = 32
Branch analysis from position: 37
Branch analysis from position: 32
Branch analysis from position: 34
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/4Wmcn
function name:  (null)
number of ops:  66
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
   16    22        ROPE_INIT                                     3  ~22     'Time+using+%27%21%27%3A+'
         23        ROPE_ADD                                      1  ~22     ~22, !2
         24        ROPE_END                                      2  ~21     ~22, '%0A'
         25        ECHO                                                     ~21
   19    26        INIT_FCALL                                               'microtime'
         27        SEND_VAL                                                 <true>
         28        DO_ICALL                                         $24     
         29        ASSIGN                                                   !4, $24
   21    30        ASSIGN                                                   !3, 0
         31      > JMP                                                      ->35
   22    32    >   TYPE_CHECK                                    2          !1
         33      > JMPZ                                                     ~27, ->34
   21    34    >   PRE_INC                                                  !3
         35    >   IS_SMALLER_OR_EQUAL                                      !3, !0
         36      > JMPNZ                                                    ~29, ->32
   25    37    >   INIT_FCALL                                               'microtime'
         38        SEND_VAL                                                 <true>
         39        DO_ICALL                                         $30     
         40        SUB                                              ~31     $30, !4
         41        ASSIGN                                                   !4, ~31
   27    42        ROPE_INIT                                     3  ~34     'Time+using+%27%3D%3D%3D%27%3A+'
         43        ROPE_ADD                                      1  ~34     ~34, !4
         44        ROPE_END                                      2  ~33     ~34, '%0A'
         45        ECHO                                                     ~33
   29    46        IS_SMALLER                                               !4, !2
         47      > JMPZ                                                     ~36, ->57
   30    48    >   SUB                                              ~37     !2, !4
         49        DIV                                              ~38     ~37, !4
         50        MUL                                              ~39     ~38, 100
         51        ASSIGN                                                   !5, ~39
   31    52        INIT_FCALL                                               'printf'
         53        SEND_VAL                                                 '%27%21%3D%3D+null%27+was+faster+by+%25.2f+percent.'
         54        SEND_VAR                                                 !5
         55        DO_ICALL                                                 
         56      > JMP                                                      ->65
   34    57    >   SUB                                              ~42     !4, !2
         58        DIV                                              ~43     ~42, !2
         59        MUL                                              ~44     ~43, 100
         60        ASSIGN                                                   !5, ~44
   35    61        INIT_FCALL                                               'printf'
         62        SEND_VAL                                                 '%27instanceof%27+was+faster+by+%25.2f+percent.'
         63        SEND_VAR                                                 !5
         64        DO_ICALL                                                 
   37    65    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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