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<?php $str='Añoara'; var_dump($str); $a = preg_replace('/[^;\sa-zA-Z0-9áéíóúñÁÉÍÓÚÑ]+/u', '', $str); var_dump($a);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/oOTO6
function name:  (null)
number of ops:  14
compiled vars:  !0 = $str, !1 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, 'A%C3%B1oara'
    3     1        INIT_FCALL                                               'var_dump'
          2        SEND_VAR                                                 !0
          3        DO_ICALL                                                 
    4     4        INIT_FCALL                                               'preg_replace'
          5        SEND_VAL                                                 '%2F%5B%5E%3B%5Csa-zA-Z0-9%C3%A1%C3%A9%C3%AD%C3%B3%C3%BA%C3%B1%C3%81%C3%89%C3%8D%C3%93%C3%9A%C3%91%5D%2B%2Fu'
          6        SEND_VAL                                                 ''
          7        SEND_VAR                                                 !0
          8        DO_ICALL                                         $4      
          9        ASSIGN                                                   !1, $4
    5    10        INIT_FCALL                                               'var_dump'
         11        SEND_VAR                                                 !1
         12        DO_ICALL                                                 
         13      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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