<?php
// your code goes here
/* Коды для замены букв */
'а' => '1',
'б' => '2',
'в' => '3',
'г' => '4',
'д' => '5',
'е' => '6',
'ё' => '7',
'ж' => '8',
'з' => '9',
'и' => '0',
'й' => '#',
);
$text = 'нас предали. явка провалена.';
$chiper = strtr($text, $code);
echo "Оригинал: {$text}\nШифровка: {$chiper}\n";
echo "Шифровка: {$chiper}\nОригинал: {$text}\n";
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