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  1. <?php
  2. $regexp = '/[a-z]/ui';
  3. $text = "Пocтaвкa мяco гoвядины, бecкостнoe для нужд государственного";
  4. echo preg_replace($regexp, '[$1]', $text);
Success #stdin #stdout 0s 52488KB
comments (?)
stdin 
Standard input is empty
stdout 
П[][]т[]вк[] мя[][] г[]вядины, б[][]костн[][] для нужд государственного
https://ideone.com/LO13Fo
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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