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<?php $ascii = implode('', range("\x00", "\xFF")); $unicode = ''; for ($i=0;$i<500;$i++) { $unicode .= mb_chr($i, 'UTF-8'); } $mixed = $ascii . $unicode; $pattern = '/[\W_]/'; echo 'ASCII pattern wtih ASCII characters' . \PHP_EOL; var_dump(preg_replace($pattern, '', $ascii)); echo \PHP_EOL; echo 'ASCII pattern wtih unicode characters' . \PHP_EOL; var_dump(preg_replace($pattern, '', $unicode)); echo \PHP_EOL; echo 'ASCII pattern wtih mixed characters' . \PHP_EOL; var_dump(preg_replace($pattern, '', $mixed)); echo \PHP_EOL; echo 'Unicode pattern wtih ASCII characters' . \PHP_EOL; var_dump(preg_replace($pattern . 'u', '', $ascii)); echo \PHP_EOL; echo 'Unicode pattern wtih unicode characters' . \PHP_EOL; var_dump(preg_replace($pattern . 'u', '', $unicode)); echo \PHP_EOL; echo 'Unicode pattern wtih mixed characters' . \PHP_EOL; var_dump(preg_replace($pattern. 'u', '', $mixed)); echo \PHP_EOL;
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 = 12
Branch analysis from position: 20
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 12
2 jumps found. (Code = 44) Position 1 = 20, Position 2 = 12
Branch analysis from position: 20
Branch analysis from position: 12
filename:       /in/hSVV5
function name:  (null)
number of ops:  87
compiled vars:  !0 = $ascii, !1 = $unicode, !2 = $i, !3 = $mixed, !4 = $pattern
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'implode'
          1        SEND_VAL                                                 ''
          2        INIT_FCALL                                               'range'
          3        SEND_VAL                                                 '%00'
          4        SEND_VAL                                                 '%FF'
          5        DO_ICALL                                         $5      
          6        SEND_VAR                                                 $5
          7        DO_ICALL                                         $6      
          8        ASSIGN                                                   !0, $6
    4     9        ASSIGN                                                   !1, ''
    5    10        ASSIGN                                                   !2, 0
         11      > JMP                                                      ->18
    6    12    >   INIT_FCALL                                               'mb_chr'
         13        SEND_VAR                                                 !2
         14        SEND_VAL                                                 'UTF-8'
         15        DO_ICALL                                         $10     
         16        ASSIGN_OP                                     8          !1, $10
    5    17        PRE_INC                                                  !2
         18    >   IS_SMALLER                                               !2, 500
         19      > JMPNZ                                                    ~13, ->12
    8    20    >   CONCAT                                           ~14     !0, !1
         21        ASSIGN                                                   !3, ~14
   10    22        ASSIGN                                                   !4, '%2F%5B%5CW_%5D%2F'
   12    23        ECHO                                                     'ASCII+pattern+wtih+ASCII+characters%0A'
   13    24        INIT_FCALL                                               'var_dump'
         25        INIT_FCALL                                               'preg_replace'
         26        SEND_VAR                                                 !4
         27        SEND_VAL                                                 ''
         28        SEND_VAR                                                 !0
         29        DO_ICALL                                         $17     
         30        SEND_VAR                                                 $17
         31        DO_ICALL                                                 
   14    32        ECHO                                                     '%0A'
   16    33        ECHO                                                     'ASCII+pattern+wtih+unicode+characters%0A'
   17    34        INIT_FCALL                                               'var_dump'
         35        INIT_FCALL                                               'preg_replace'
         36        SEND_VAR                                                 !4
         37        SEND_VAL                                                 ''
         38        SEND_VAR                                                 !1
         39        DO_ICALL                                         $19     
         40        SEND_VAR                                                 $19
         41        DO_ICALL                                                 
   18    42        ECHO                                                     '%0A'
   20    43        ECHO                                                     'ASCII+pattern+wtih+mixed+characters%0A'
   21    44        INIT_FCALL                                               'var_dump'
         45        INIT_FCALL                                               'preg_replace'
         46        SEND_VAR                                                 !4
         47        SEND_VAL                                                 ''
         48        SEND_VAR                                                 !3
         49        DO_ICALL                                         $21     
         50        SEND_VAR                                                 $21
         51        DO_ICALL                                                 
   22    52        ECHO                                                     '%0A'
   24    53        ECHO                                                     'Unicode+pattern+wtih+ASCII+characters%0A'
   25    54        INIT_FCALL                                               'var_dump'
         55        INIT_FCALL                                               'preg_replace'
         56        CONCAT                                           ~23     !4, 'u'
         57        SEND_VAL                                                 ~23
         58        SEND_VAL                                                 ''
         59        SEND_VAR                                                 !0
         60        DO_ICALL                                         $24     
         61        SEND_VAR                                                 $24
         62        DO_ICALL                                                 
   26    63        ECHO                                                     '%0A'
   28    64        ECHO                                                     'Unicode+pattern+wtih+unicode+characters%0A'
   29    65        INIT_FCALL                                               'var_dump'
         66        INIT_FCALL                                               'preg_replace'
         67        CONCAT                                           ~26     !4, 'u'
         68        SEND_VAL                                                 ~26
         69        SEND_VAL                                                 ''
         70        SEND_VAR                                                 !1
         71        DO_ICALL                                         $27     
         72        SEND_VAR                                                 $27
         73        DO_ICALL                                                 
   30    74        ECHO                                                     '%0A'
   32    75        ECHO                                                     'Unicode+pattern+wtih+mixed+characters%0A'
   33    76        INIT_FCALL                                               'var_dump'
         77        INIT_FCALL                                               'preg_replace'
         78        CONCAT                                           ~29     !4, 'u'
         79        SEND_VAL                                                 ~29
         80        SEND_VAL                                                 ''
         81        SEND_VAR                                                 !3
         82        DO_ICALL                                         $30     
         83        SEND_VAR                                                 $30
         84        DO_ICALL                                                 
   34    85        ECHO                                                     '%0A'
   35    86      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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