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  1.  <?php
  2. error_reporting(-1);
  3. mb_internal_encoding('utf-8');
  4.  
  5. $text        = "Аргентина манит негра";
  6. $resultTrue  = 'палиндром';
  7. $resultFalse = 'не палиндром';
  8.  
  9. $text = str_replace(" ", "", $text);
  10. $text = mb_strtolower($text);
  11.  
  12.  
  13. $length     = mb_strlen($text);
  14. $halgLength = floor($length / 2);
  15.  
  16. for ($i = 0; $i < $halgLength; $i++) {
  17.     $symbol1 = mb_substr($text, $i, 1);
  18.     $symbol2 = mb_substr($text, -$halgLength + $i, 1);
  19. }
  20.  
  21.  
  22. if ($symbol1 == $symbol2) {
  23.     echo "$resultTrue \n";
  24. } else {
  25.     echo "$resultFalse \n";
  26. }
Success #stdin #stdout 0.01s 20520KB
comments (?)
stdin 
Standard input is empty
stdout 
 палиндром
https://ideone.com/czcbId
language:
PHP (php 7.3.5)
created:
10 years ago
visibility:
public

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