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  1. <?php 
  2. function utf8_strrev(string $str)
  3. {
  4.     preg_match_all('/./us', $str, $ar);
  5.     return join('', array_reverse($ar[0]));
  6. }
  7.  
  8. $text = "А роза упала на лапу Азора";
  9. $textToCompare = mb_strtolower(str_replace(" ", "", $text));
  10. echo utf8_strrev($textToCompare) === $textToCompare ? "палиндром" : "не палиндром";
Success #stdin #stdout 0.01s 24764KB
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палиндром
https://ideone.com/S7Pzbs
language:
PHP (php 7.3.5)
created:
4 years ago
visibility:
public

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