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  1. <?php
  2. error_reporting(-1);
  3. $text = <<<EOF
  4. London - столица Англии.
  5. EOF;
  6.  
  7. $regexp = "/([а-яё]*)([apocex]+)([а-яё]*)/ui";
  8.  
  9. $result = preg_replace($regexp, "$1[$2]$3", $text);
  10.  
  11. echo $result;
  12.  
Success #stdin #stdout 0.03s 52480KB
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L[o]nd[o]n - столица Англии.
https://ideone.com/wtqtVR
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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