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<?php echo (!preg_match("/^[a-z]+$/i", 'A')) ? 'false' : 'true'; echo "\n"; echo (!preg_match("/^[a-z]+$/i", '4567A')) ? 'false' : 'true';
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 43) Position 1 = 6, Position 2 = 8
Branch analysis from position: 6
1 jumps found. (Code = 42) Position 1 = 9
Branch analysis from position: 9
2 jumps found. (Code = 43) Position 1 = 17, Position 2 = 19
Branch analysis from position: 17
1 jumps found. (Code = 42) Position 1 = 20
Branch analysis from position: 20
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 19
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
2 jumps found. (Code = 43) Position 1 = 17, Position 2 = 19
Branch analysis from position: 17
Branch analysis from position: 19
filename:       /in/okKGo
function name:  (null)
number of ops:  22
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'preg_match'
          1        SEND_VAL                                                 '%2F%5E%5Ba-z%5D%2B%24%2Fi'
          2        SEND_VAL                                                 'A'
          3        DO_ICALL                                         $0      
          4        BOOL_NOT                                         ~1      $0
          5      > JMPZ                                                     ~1, ->8
          6    >   QM_ASSIGN                                        ~2      'false'
          7      > JMP                                                      ->9
          8    >   QM_ASSIGN                                        ~2      'true'
          9    >   ECHO                                                     ~2
    3    10        ECHO                                                     '%0A'
    4    11        INIT_FCALL                                               'preg_match'
         12        SEND_VAL                                                 '%2F%5E%5Ba-z%5D%2B%24%2Fi'
         13        SEND_VAL                                                 '4567A'
         14        DO_ICALL                                         $3      
         15        BOOL_NOT                                         ~4      $3
         16      > JMPZ                                                     ~4, ->19
         17    >   QM_ASSIGN                                        ~5      'false'
         18      > JMP                                                      ->20
         19    >   QM_ASSIGN                                        ~5      'true'
         20    >   ECHO                                                     ~5
         21      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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