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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); } else { $p = (($time2-$time1)/$time1) * 100; printf("'instanceof' was faster by %.2f percent.", $p); }
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 = 11
Branch analysis from position: 16
1 jumps found. (Code = 42) Position 1 = 30
Branch analysis from position: 30
2 jumps found. (Code = 44) Position 1 = 32, Position 2 = 27
Branch analysis from position: 32
2 jumps found. (Code = 43) Position 1 = 38, Position 2 = 47
Branch analysis from position: 38
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: 47
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 27
2 jumps found. (Code = 43) Position 1 = 29, Position 2 = 29
Branch analysis from position: 29
2 jumps found. (Code = 44) Position 1 = 32, Position 2 = 27
Branch analysis from position: 32
Branch analysis from position: 27
Branch analysis from position: 29
Branch analysis from position: 11
2 jumps found. (Code = 43) Position 1 = 13, Position 2 = 13
Branch analysis from position: 13
2 jumps found. (Code = 44) Position 1 = 16, Position 2 = 11
Branch analysis from position: 16
Branch analysis from position: 11
Branch analysis from position: 13
filename:       /in/2UjUo
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                                                      ->14
   11    11    >   INSTANCEOF                                               !1, 'stdClass'
         12      > JMPZ                                                     ~14, ->13
   10    13    >   PRE_INC                                                  !3
         14    >   IS_SMALLER_OR_EQUAL                                      !3, !0
         15      > JMPNZ                                                    ~16, ->11
   14    16    >   INIT_FCALL                                               'microtime'
         17        SEND_VAL                                                 <true>
         18        DO_ICALL                                         $17     
         19        SUB                                              ~18     $17, !2
         20        ASSIGN                                                   !2, ~18
   19    21        INIT_FCALL                                               'microtime'
         22        SEND_VAL                                                 <true>
         23        DO_ICALL                                         $20     
         24        ASSIGN                                                   !4, $20
   21    25        ASSIGN                                                   !3, 0
         26      > JMP                                                      ->30
   22    27    >   TYPE_CHECK                                  1020          !1
         28      > JMPZ                                                     ~23, ->29
   21    29    >   PRE_INC                                                  !3
         30    >   IS_SMALLER_OR_EQUAL                                      !3, !0
         31      > JMPNZ                                                    ~25, ->27
   27    32    >   ROPE_INIT                                     3  ~27     'Time+using+%27%3D%3D%3D%27%3A+'
         33        ROPE_ADD                                      1  ~27     ~27, !4
         34        ROPE_END                                      2  ~26     ~27, '%0A'
         35        ECHO                                                     ~26
   29    36        IS_SMALLER                                               !4, !2
         37      > JMPZ                                                     ~29, ->47
   30    38    >   SUB                                              ~30     !2, !4
         39        DIV                                              ~31     ~30, !4
         40        MUL                                              ~32     ~31, 100
         41        ASSIGN                                                   !5, ~32
   31    42        INIT_FCALL                                               'printf'
         43        SEND_VAL                                                 '%27%21%3D%3D+null%27+was+faster+by+%25.2f+percent.'
         44        SEND_VAR                                                 !5
         45        DO_ICALL                                                 
         46      > JMP                                                      ->55
   33    47    >   SUB                                              ~35     !4, !2
         48        DIV                                              ~36     ~35, !2
         49        MUL                                              ~37     ~36, 100
         50        ASSIGN                                                   !5, ~37
   34    51        INIT_FCALL                                               'printf'
         52        SEND_VAL                                                 '%27instanceof%27+was+faster+by+%25.2f+percent.'
         53        SEND_VAR                                                 !5
         54        DO_ICALL                                                 
   35    55    > > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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