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<?php preg_match('/^\w+$/u', '人1994', $m); var_dump($m);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/mklML
function name:  (null)
number of ops:  9
compiled vars:  !0 = $m
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   INIT_FCALL                                                   'preg_match'
          1        SEND_VAL                                                     '%2F%5E%5Cw%2B%24%2Fu'
          2        SEND_VAL                                                     '%E4%BA%BA1994'
          3        SEND_REF                                                     !0
          4        DO_ICALL                                                     
    4     5        INIT_FCALL                                                   'var_dump'
          6        SEND_VAR                                                     !0
          7        DO_ICALL                                                     
          8      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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