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<?php $str_utf8 = 'Русский текст'; $str_cp1251 = iconv('UTF-8', 'Windows-1251', $str_utf8); var_dump(preg_match('#.#u', $str_utf8)); var_dump(preg_match('#.#u', $str_cp1251));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ihbAO
function name:  (null)
number of ops:  22
compiled vars:  !0 = $str_utf8, !1 = $str_cp1251
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%D0%A0%D1%83%D1%81%D1%81%D0%BA%D0%B8%D0%B9+%D1%82%D0%B5%D0%BA%D1%81%D1%82'
    3     1        INIT_FCALL_BY_NAME                                       'iconv'
          2        SEND_VAL_EX                                              'UTF-8'
          3        SEND_VAL_EX                                              'Windows-1251'
          4        SEND_VAR_EX                                              !0
          5        DO_FCALL                                      0  $3      
          6        ASSIGN                                                   !1, $3
    4     7        INIT_FCALL                                               'var_dump'
          8        INIT_FCALL                                               'preg_match'
          9        SEND_VAL                                                 '%23.%23u'
         10        SEND_VAR                                                 !0
         11        DO_ICALL                                         $5      
         12        SEND_VAR                                                 $5
         13        DO_ICALL                                                 
    5    14        INIT_FCALL                                               'var_dump'
         15        INIT_FCALL                                               'preg_match'
         16        SEND_VAL                                                 '%23.%23u'
         17        SEND_VAR                                                 !1
         18        DO_ICALL                                         $7      
         19        SEND_VAR                                                 $7
         20        DO_ICALL                                                 
         21      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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