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<?php $r = '/^[А-Я]{1}[0-9]{3}[А-Я]{2}[0-9]{3}$/u'; $pattern = 'Я000ЯЯ000'; $check = function ($str) use ($r, $pattern) { return (bool) preg_match($r, $str . mb_substr($pattern, mb_strlen($str))); }; foreach (['ББ12', 'И7'] as $test) { echo json_encode([$test, $check($test)], JSON_UNESCAPED_UNICODE), PHP_EOL; }
Finding entry points
Branch analysis from position: 0
2 jumps found. (Code = 77) Position 1 = 7, Position 2 = 20
Branch analysis from position: 7
2 jumps found. (Code = 78) Position 1 = 8, Position 2 = 20
Branch analysis from position: 8
1 jumps found. (Code = 42) Position 1 = 7
Branch analysis from position: 7
Branch analysis from position: 20
1 jumps found. (Code = 62) Position 1 = -2
Branch analysis from position: 20
filename:       /in/5HCrV
function name:  (null)
number of ops:  22
compiled vars:  !0 = $r, !1 = $pattern, !2 = $check, !3 = $test
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, '%2F%5E%5B%D0%90-%D0%AF%5D%7B1%7D%5B0-9%5D%7B3%7D%5B%D0%90-%D0%AF%5D%7B2%7D%5B0-9%5D%7B3%7D%24%2Fu'
    4     1        ASSIGN                                                       !1, '%D0%AF000%D0%AF%D0%AF000'
    5     2        DECLARE_LAMBDA_FUNCTION                              ~6      [0]
          3        BIND_LEXICAL                                                 ~6, !0
          4        BIND_LEXICAL                                                 ~6, !1
          5        ASSIGN                                                       !2, ~6
    9     6      > FE_RESET_R                                           $8      <array>, ->20
          7    > > FE_FETCH_R                                                   $8, !3, ->20
   10     8    >   INIT_FCALL                                                   'json_encode'
          9        INIT_ARRAY                                           ~9      !3
         10        INIT_DYNAMIC_CALL                                            !2
         11        SEND_VAR_EX                                                  !3
         12        DO_FCALL                                          0  $10     
         13        ADD_ARRAY_ELEMENT                                    ~9      $10
         14        SEND_VAL                                                     ~9
         15        SEND_VAL                                                     256
         16        DO_ICALL                                             $11     
         17        ECHO                                                         $11
         18        ECHO                                                         '%0A'
    9    19      > JMP                                                          ->7
         20    >   FE_FREE                                                      $8
   11    21      > RETURN                                                       1


Dynamic Functions:
Dynamic Function 0
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/5HCrV
function name:  {closure:/in/5HCrV:5}
number of ops:  15
compiled vars:  !0 = $str, !1 = $r, !2 = $pattern
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    5     0  E >   RECV                                                 !0      
          1        BIND_STATIC                                                  !1
          2        BIND_STATIC                                                  !2
    6     3        INIT_FCALL                                                   'mb_substr'
          4        SEND_VAR                                                     !2
          5        INIT_FCALL                                                   'mb_strlen'
          6        SEND_VAR                                                     !0
          7        DO_ICALL                                             $3      
          8        SEND_VAR                                                     $3
          9        DO_ICALL                                             $4      
         10        CONCAT                                               ~5      !0, $4
         11        FRAMELESS_ICALL_2                preg_match          ~6      !1, ~5
         12        BOOL                                                 ~7      ~6
         13      > RETURN                                                       ~7
    7    14*     > RETURN                                                       null

End of Dynamic Function 0

Generated using Vulcan Logic Dumper, using php 8.5.0


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