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<?php echo preg_match('/\b\pL{2,4}\b/ui', 'данно малов словв');
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/rQ7f6
function name:  (null)
number of ops:  6
compiled vars:  none
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   INIT_FCALL                                               'preg_match'
          1        SEND_VAL                                                 '%2F%5Cb%5CpL%7B2%2C4%7D%5Cb%2Fui'
          2        SEND_VAL                                                 '%D0%B4%D0%B0%D0%BD%D0%BD%D0%BE+%D0%BC%D0%B0%D0%BB%D0%BE%D0%B2+%D1%81%D0%BB%D0%BE%D0%B2%D0%B2'
          3        DO_ICALL                                         $0      
          4        ECHO                                                     $0
          5      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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