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<?php $string=' دد'; var_dump(preg_replace('#(?:^\s+|\s+$)#u', '', $string));
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/1EeXH
function name:  (null)
number of ops:  7
compiled vars:  !0 = $string
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, '+%D8%AF%D8%AF'
    4     1        INIT_FCALL                                                   'var_dump'
          2        FRAMELESS_ICALL_3                preg_replace        ~2      '%23%28%3F%3A%5E%5Cs%2B%7C%5Cs%2B%24%29%23u', ''
          3        OP_DATA                                                      !0
          4        SEND_VAL                                                     ~2
          5        DO_ICALL                                                     
          6      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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