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  1. <?php
  2.  
  3. error_reporting(-1);
  4. mb_internal_encoding('utf-8');
  5.  
  6. $text = "А роза упала на лапу Азора";
  7. $resultTrue = "палиндром";
  8. $resultFalse = "не палиндром";
  9.  
  10. $text = str_replace(" ", "", $text);
  11. $text = mb_strtolower($text);
  12.  
  13.  
  14. $length = mb_strlen($text);
  15. $halfLength = floor($length/ 2);
  16.  
  17. for ($i = 1; $i <= $halfLength; $i++) {
  18.     $firstLetter = mb_substr($text, $i, 1);
  19.     $lastLetter = mb_substr($text, -$i, 1);
  20.  
  21.     if ( $firstLetter != $lastLetter) {
  22.       echo "$resultFalse\n";
  23.        break;
  24.     } else {
  25.     	echo "$resultTrue\n";
  26.     	break;
  27.     }
  28. }
  29.  
Success #stdin #stdout 0.02s 52472KB
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Standard input is empty
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не палиндром
https://ideone.com/CGDOnA
language:
PHP (php 7.3.5)
created:
9 years ago
visibility:
public

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