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<?php $userId = '1-2='; echo preg_match('/\A[a-zA-Z0-9\-=_]{3,8}?\z/u', $userId) ? 'true' : 'false';
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
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 8
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/pvOCS
function name:  (null)
number of ops:  11
compiled vars:  !0 = $userId
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '1-2%3D'
    3     1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%2F%5CA%5Ba-zA-Z0-9%5C-%3D_%5D%7B3%2C8%7D%3F%5Cz%2Fu'
          3        SEND_VAR                                                 !0
          4        DO_ICALL                                         $2      
          5      > JMPZ                                                     $2, ->8
          6    >   QM_ASSIGN                                        ~3      'true'
          7      > JMP                                                      ->9
          8    >   QM_ASSIGN                                        ~3      'false'
          9    >   ECHO                                                     ~3
         10      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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