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<?php var_dump(preg_match('//u', "\xE4B880\xE4B880", $matches)); var_dump($matches); var_dump(preg_match('//u', "\xF0A0808B", $matches)); var_dump($matches); var_dump(preg_match('//u', '𠀋', $matches)); var_dump($matches);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/ajhbA
function name:  (null)
number of ops:  34
compiled vars:  !0 = $matches
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'var_dump'
          1        INIT_FCALL                                               'preg_match'
          2        SEND_VAL                                                 '%2F%2Fu'
          3        SEND_VAL                                                 '%E4B880%E4B880'
          4        SEND_REF                                                 !0
          5        DO_ICALL                                         $1      
          6        SEND_VAR                                                 $1
          7        DO_ICALL                                                 
    3     8        INIT_FCALL                                               'var_dump'
          9        SEND_VAR                                                 !0
         10        DO_ICALL                                                 
    4    11        INIT_FCALL                                               'var_dump'
         12        INIT_FCALL                                               'preg_match'
         13        SEND_VAL                                                 '%2F%2Fu'
         14        SEND_VAL                                                 '%F0A0808B'
         15        SEND_REF                                                 !0
         16        DO_ICALL                                         $4      
         17        SEND_VAR                                                 $4
         18        DO_ICALL                                                 
    5    19        INIT_FCALL                                               'var_dump'
         20        SEND_VAR                                                 !0
         21        DO_ICALL                                                 
    6    22        INIT_FCALL                                               'var_dump'
         23        INIT_FCALL                                               'preg_match'
         24        SEND_VAL                                                 '%2F%2Fu'
         25        SEND_VAL                                                 '%F0%A0%80%8B'
         26        SEND_REF                                                 !0
         27        DO_ICALL                                         $7      
         28        SEND_VAR                                                 $7
         29        DO_ICALL                                                 
    7    30        INIT_FCALL                                               'var_dump'
         31        SEND_VAR                                                 !0
         32        DO_ICALL                                                 
         33      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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