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<?php $str = '£££2343423 34234238& '; $new = preg_replace('/^[^\p{L}0-9]+|[^\p{L}0-9]+\z/u', '', $str); echo $new;
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/cF7MK
function name:  (null)
number of ops:  6
compiled vars:  !0 = $str, !1 = $new
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, '%C2%A3%C2%A3%C2%A32343423+34234238%26+++'
    4     1        FRAMELESS_ICALL_3                preg_replace        ~3      '%2F%5E%5B%5E%5Cp%7BL%7D0-9%5D%2B%7C%5B%5E%5Cp%7BL%7D0-9%5D%2B%5Cz%2Fu', ''
          2        OP_DATA                                                      !0
          3        ASSIGN                                                       !1, ~3
    5     4        ECHO                                                         !1
    6     5      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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