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  1. <?php
  2.  
  3. error_reporting(-1);
  4. mb_internal_encoding('utf-8');
  5.  
  6.  
  7. $text = "Аргентина манит негра";
  8. $result = 'Это палиндром';
  9. $resultN = "Это не палиндром";
  10.  
  11. $text = mb_strtolower($text);
  12. $text = str_replace(' ', '', $text);
  13.  
  14. $length = mb_strlen($text);
  15. $halfLength = floor($length / 2);
  16.  
  17. for ($i = 1; $i <= $halfLength; $i++)  {
  18. 	$symbol = mb_substr($text, $i - 1, 1);
  19. 	$symbolRev = mb_substr($text, -$i, 1);
  20. 	if ($symbol != $symbolRev) {
  21.         echo "$resultN";
  22.         break;
  23.     } elseif ($i == $halfLength) {
  24.           echo "$result";	 
  25.       } else {
  26.          echo "$symbol - $symbolRev\n";
  27.         } 
  28. }
Success #stdin #stdout 0.02s 52472KB
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stdin
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Standard input is empty
stdout
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а - а
р - р
г - г
е - е
н - н
т - т
и - и
н - н
Это палиндром
https://ideone.com/sL7aTo
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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