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<?php $a = 'Северный атлантический/русский банк москвы, находящийся на_юге\ москвы'; echo preg_replace('#[^0-9a-zA-Zа-яА-ЯёЁ.\\/_]#','', $a);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/IXpVf
function name:  (null)
number of ops:  8
compiled vars:  !0 = $a
line      #* E I O op                           fetch          ext  return  operands
-------------------------------------------------------------------------------------
    2     0  E >   ASSIGN                                                   !0, '%D0%A1%D0%B5%D0%B2%D0%B5%D1%80%D0%BD%D1%8B%D0%B9+%D0%B0%D1%82%D0%BB%D0%B0%D0%BD%D1%82%D0%B8%D1%87%D0%B5%D1%81%D0%BA%D0%B8%D0%B9%2F%D1%80%D1%83%D1%81%D1%81%D0%BA%D0%B8%D0%B9+%D0%B1%D0%B0%D0%BD%D0%BA+%D0%BC%D0%BE%D1%81%D0%BA%D0%B2%D1%8B%2C+%D0%BD%D0%B0%D1%85%D0%BE%D0%B4%D1%8F%D1%89%D0%B8%D0%B9%D1%81%D1%8F+%D0%BD%D0%B0_%D1%8E%D0%B3%D0%B5%5C%C2%A0%D0%BC%D0%BE%D1%81%D0%BA%D0%B2%D1%8B'
    3     1        INIT_FCALL                                               'preg_replace'
          2        SEND_VAL                                                 '%23%5B%5E0-9a-zA-Z%D0%B0-%D1%8F%D0%90-%D0%AF%D1%91%D0%81.%5C%2F_%5D%23'
          3        SEND_VAL                                                 ''
          4        SEND_VAR                                                 !0
          5        DO_ICALL                                         $2      
          6        ECHO                                                     $2
          7      > RETURN                                                   1

Generated using Vulcan Logic Dumper, using php 8.0.0


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