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<?php $str = 'Вопрос: Как купить автомобиль безопасно ответ? Ответ: не ясен. Ответ: Прежде всего, нужно обратиться в компанию...'; $res = preg_replace('/.*(?=Ответ:)/u', '', $str); var_dump($res);
Finding entry points
Branch analysis from position: 0
1 jumps found. (Code = 62) Position 1 = -2
filename:       /in/TtZcc
function name:  (null)
number of ops:  8
compiled vars:  !0 = $str, !1 = $res
line      #* E I O op                               fetch          ext  return  operands
-----------------------------------------------------------------------------------------
    3     0  E >   ASSIGN                                                       !0, '%D0%92%D0%BE%D0%BF%D1%80%D0%BE%D1%81%3A+%D0%9A%D0%B0%D0%BA+%D0%BA%D1%83%D0%BF%D0%B8%D1%82%D1%8C+%D0%B0%D0%B2%D1%82%D0%BE%D0%BC%D0%BE%D0%B1%D0%B8%D0%BB%D1%8C+%D0%B1%D0%B5%D0%B7%D0%BE%D0%BF%D0%B0%D1%81%D0%BD%D0%BE+%D0%BE%D1%82%D0%B2%D0%B5%D1%82%3F+%D0%9E%D1%82%D0%B2%D0%B5%D1%82%3A+%D0%BD%D0%B5+%D1%8F%D1%81%D0%B5%D0%BD.+%D0%9E%D1%82%D0%B2%D0%B5%D1%82%3A+%D0%9F%D1%80%D0%B5%D0%B6%D0%B4%D0%B5+%D0%B2%D1%81%D0%B5%D0%B3%D0%BE%2C+%D0%BD%D1%83%D0%B6%D0%BD%D0%BE+%D0%BE%D0%B1%D1%80%D0%B0%D1%82%D0%B8%D1%82%D1%8C%D1%81%D1%8F+%D0%B2+%D0%BA%D0%BE%D0%BC%D0%BF%D0%B0%D0%BD%D0%B8%D1%8E...'
    4     1        FRAMELESS_ICALL_3                preg_replace        ~3      '%2F.%2A%28%3F%3D%D0%9E%D1%82%D0%B2%D0%B5%D1%82%3A%29%2Fu', ''
          2        OP_DATA                                                      !0
          3        ASSIGN                                                       !1, ~3
    5     4        INIT_FCALL                                                   'var_dump'
          5        SEND_VAR                                                     !1
          6        DO_ICALL                                                     
          7      > RETURN                                                       1

Generated using Vulcan Logic Dumper, using php 8.5.0


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