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<?php setlocale(LC_ALL, 'de_DE'); // German locale (not needed, but you never know...) echo preg_match('/^[a-z]+$/', 'abc') ? "yes\n" : "no\n"; echo preg_match('/^[a-z]+$/', "\äbc") ? "yes\n" : "no\n"; // äbc in ISO-8859-1 echo preg_match('/^[a-z]+$/', "\xC3\xA4bc") ? "yes\n" : "no\n"; // äbc in UTF-8 echo preg_match('/^[a-z]+$/u', "\xC3\xA4bc") ? "yes\n" : "no\n"; // w/ PCRE_UTF8
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 9, Position 2 = 11
Branch analysis from position: 9
1 jumps found. (Code = 42) Position 1 = 12
Branch analysis from position: 12
2 jumps found. (Code = 43) Position 1 = 18, Position 2 = 20
Branch analysis from position: 18
1 jumps found. (Code = 42) Position 1 = 21
Branch analysis from position: 21
2 jumps found. (Code = 43) Position 1 = 27, Position 2 = 29
Branch analysis from position: 27
1 jumps found. (Code = 42) Position 1 = 30
Branch analysis from position: 30
2 jumps found. (Code = 43) Position 1 = 36, Position 2 = 38
Branch analysis from position: 36
1 jumps found. (Code = 42) Position 1 = 39
Branch analysis from position: 39
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 38
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 29
2 jumps found. (Code = 43) Position 1 = 36, Position 2 = 38
Branch analysis from position: 36
Branch analysis from position: 38
Branch analysis from position: 20
2 jumps found. (Code = 43) Position 1 = 27, Position 2 = 29
Branch analysis from position: 27
Branch analysis from position: 29
Branch analysis from position: 11
2 jumps found. (Code = 43) Position 1 = 18, Position 2 = 20
Branch analysis from position: 18
Branch analysis from position: 20
filename:       /in/gBOaB
function name:  (null)
number of ops:  41
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                               'setlocale'
          1        SEND_VAL                                                 6
          2        SEND_VAL                                                 'de_DE'
          3        DO_ICALL                                                 
    4     4        INIT_FCALL                                               'preg_match'
          5        SEND_VAL                                                 '%2F%5E%5Ba-z%5D%2B%24%2F'
          6        SEND_VAL                                                 'abc'
          7        DO_ICALL                                         $1      
          8      > JMPZ                                                     $1, ->11
          9    >   QM_ASSIGN                                        ~2      'yes%0A'
         10      > JMP                                                      ->12
         11    >   QM_ASSIGN                                        ~2      'no%0A'
         12    >   ECHO                                                     ~2
    5    13        INIT_FCALL                                               'preg_match'
         14        SEND_VAL                                                 '%2F%5E%5Ba-z%5D%2B%24%2F'
         15        SEND_VAL                                                 '%5C%C3%A4bc'
         16        DO_ICALL                                         $3      
         17      > JMPZ                                                     $3, ->20
         18    >   QM_ASSIGN                                        ~4      'yes%0A'
         19      > JMP                                                      ->21
         20    >   QM_ASSIGN                                        ~4      'no%0A'
         21    >   ECHO                                                     ~4
    6    22        INIT_FCALL                                               'preg_match'
         23        SEND_VAL                                                 '%2F%5E%5Ba-z%5D%2B%24%2F'
         24        SEND_VAL                                                 '%C3%A4bc'
         25        DO_ICALL                                         $5      
         26      > JMPZ                                                     $5, ->29
         27    >   QM_ASSIGN                                        ~6      'yes%0A'
         28      > JMP                                                      ->30
         29    >   QM_ASSIGN                                        ~6      'no%0A'
         30    >   ECHO                                                     ~6
    7    31        INIT_FCALL                                               'preg_match'
         32        SEND_VAL                                                 '%2F%5E%5Ba-z%5D%2B%24%2Fu'
         33        SEND_VAL                                                 '%C3%A4bc'
         34        DO_ICALL                                         $7      
         35      > JMPZ                                                     $7, ->38
         36    >   QM_ASSIGN                                        ~8      'yes%0A'
         37      > JMP                                                      ->39
         38    >   QM_ASSIGN                                        ~8      'no%0A'
         39    >   ECHO                                                     ~8
         40      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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