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  1. <?php
  2. error_reporting(-1);
  3. mb_internal_encoding('utf-8');
  4.  
  5. $text = 'абвгд';
  6. $result = 'палиндром';
  7. $badresult = 'не палиндром';
  8.  
  9. $small = mb_strtolower($text);
  10. $nospace = str_replace(" ", "", $small);
  11.  
  12. $lenght = mb_strlen($nospace);
  13. $halflenght = floor($lenght / 2);
  14.  
  15. for ($i = 1; $i <= $halflenght; $i++) {
  16. 	$symbol = mb_substr($nospace, $i, $halflenght);
  17. 	$symbolback = mb_substr ($nospace, $halflenght, -1);
  18. 	$symbolLen = mb_strlen($symbol);
  19. 	$symbolBackLen = mb_strlen($symbolback);
  20. 	if ($symbolLen == $symbolBackLen) {
  21. 		echo $result;
  22. 		break;
  23. 	}
  24. 	elseif ($symbolLen !== $symbolBackLen) {
  25. 		echo $badresult;
  26. 		break;
  27. 	}
  28. }
Success #stdin #stdout 0.01s 52488KB
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палиндром
https://ideone.com/LpQYin
Палиндром 2
language:
PHP (php 7.3.5)
created:
8 years ago
visibility:
public

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