3v4l.org

run code in 300+ PHP versions simultaneously
<?php $class = 'VeryStrangeThirdPartyLibraryName\\This\\Is\\A\\Very\\Long\\Namespace\\Path\\With\\Many\\Parts\\To\\This\\Class'; $iterations = 300000; foreach (range(0, 9) as $iteration) { $start = microtime(true); for ($i = 0; $i < $iterations; $i++) { if (0 === strpos($class, 'Yii\\')) { } } $finish = microtime(true) - $start; $startOlympiad = microtime(true); for ($i = 0; $i < $iterations; $i++) { if ('Yii\\' === substr($class, 0, 4)) { } } $finishOlympiad = microtime(true) - $startOlympiad; var_dump($finish); var_dump($finishOlympiad); var_dump('-------------'); }

Abusive script

This script was stopped while abusing our resources

Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 7, Position 2 = 59
Branch analysis from position: 7
2 jumps found. (Code = 78) Position 1 = 8, Position 2 = 59
Branch analysis from position: 8
1 jumps found. (Code = 42) Position 1 = 21
Branch analysis from position: 21
2 jumps found. (Code = 44) Position 1 = 23, Position 2 = 14
Branch analysis from position: 23
1 jumps found. (Code = 42) Position 1 = 42
Branch analysis from position: 42
2 jumps found. (Code = 44) Position 1 = 44, Position 2 = 34
Branch analysis from position: 44
1 jumps found. (Code = 42) Position 1 = 7
Branch analysis from position: 7
Branch analysis from position: 34
2 jumps found. (Code = 43) Position 1 = 41, Position 2 = 41
Branch analysis from position: 41
2 jumps found. (Code = 44) Position 1 = 44, Position 2 = 34
Branch analysis from position: 44
Branch analysis from position: 34
Branch analysis from position: 41
Branch analysis from position: 14
2 jumps found. (Code = 43) Position 1 = 20, Position 2 = 20
Branch analysis from position: 20
2 jumps found. (Code = 44) Position 1 = 23, Position 2 = 14
Branch analysis from position: 23
Branch analysis from position: 14
Branch analysis from position: 20
Branch analysis from position: 59
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 59
filename:       /in/bqAvC
function name:  (null)
number of ops:  61
compiled vars:  !0 = $class, !1 = $iterations, !2 = $iteration, !3 = $start, !4 = $i, !5 = $finish, !6 = $startOlympiad, !7 = $finishOlympiad
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                   !0, 'VeryStrangeThirdPartyLibraryName%5CThis%5CIs%5CA%5CVery%5CLong%5CNamespace%5CPath%5CWith%5CMany%5CParts%5CTo%5CThis%5CClass'
    4     1        ASSIGN                                                   !1, 300000
    6     2        INIT_FCALL                                               'range'
          3        SEND_VAL                                                 0
          4        SEND_VAL                                                 9
          5        DO_ICALL                                         $10     
          6      > FE_RESET_R                                       $11     $10, ->59
          7    > > FE_FETCH_R                                               $11, !2, ->59
    7     8    >   INIT_FCALL                                               'microtime'
          9        SEND_VAL                                                 <true>
         10        DO_ICALL                                         $12     
         11        ASSIGN                                                   !3, $12
    8    12        ASSIGN                                                   !4, 0
         13      > JMP                                                      ->21
    9    14    >   INIT_FCALL                                               'strpos'
         15        SEND_VAR                                                 !0
         16        SEND_VAL                                                 'Yii%5C'
         17        DO_ICALL                                         $15     
         18        IS_IDENTICAL                                             $15, 0
         19      > JMPZ                                                     ~16, ->20
    8    20    >   PRE_INC                                                  !4
         21    >   IS_SMALLER                                               !4, !1
         22      > JMPNZ                                                    ~18, ->14
   13    23    >   INIT_FCALL                                               'microtime'
         24        SEND_VAL                                                 <true>
         25        DO_ICALL                                         $19     
         26        SUB                                              ~20     $19, !3
         27        ASSIGN                                                   !5, ~20
   15    28        INIT_FCALL                                               'microtime'
         29        SEND_VAL                                                 <true>
         30        DO_ICALL                                         $22     
         31        ASSIGN                                                   !6, $22
   16    32        ASSIGN                                                   !4, 0
         33      > JMP                                                      ->42
   17    34    >   INIT_FCALL                                               'substr'
         35        SEND_VAR                                                 !0
         36        SEND_VAL                                                 0
         37        SEND_VAL                                                 4
         38        DO_ICALL                                         $25     
         39        IS_IDENTICAL                                             $25, 'Yii%5C'
         40      > JMPZ                                                     ~26, ->41
   16    41    >   PRE_INC                                                  !4
         42    >   IS_SMALLER                                               !4, !1
         43      > JMPNZ                                                    ~28, ->34
   22    44    >   INIT_FCALL                                               'microtime'
         45        SEND_VAL                                                 <true>
         46        DO_ICALL                                         $29     
         47        SUB                                              ~30     $29, !6
         48        ASSIGN                                                   !7, ~30
   24    49        INIT_FCALL                                               'var_dump'
         50        SEND_VAR                                                 !5
         51        DO_ICALL                                                 
   25    52        INIT_FCALL                                               'var_dump'
         53        SEND_VAR                                                 !7
         54        DO_ICALL                                                 
   26    55        INIT_FCALL                                               'var_dump'
         56        SEND_VAL                                                 '-------------'
         57        DO_ICALL                                                 
    6    58      > JMP                                                      ->7
         59    >   FE_FREE                                                  $11
   27    60      > RETURN                                                   1

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