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<?php echo mb_strlen("안녕", "utf-8"); echo strlen("가나");
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/OeEV4
function name:  (null)
number of ops:  7
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'mb_strlen'
          1        SEND_VAL                                                 '%EC%95%88%EB%85%95'
          2        SEND_VAL                                                 'utf-8'
          3        DO_ICALL                                         $0      
          4        ECHO                                                     $0
    3     5        ECHO                                                     6
          6      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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