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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. $result = 'палиндром';
  8. $badResult = 'не палиндром';
  9.  
  10. $small = mb_strtolower($text);
  11. $noSpace = str_replace(" ", "", $small);
  12.  
  13. $lenght = mb_strlen($noSpace);
  14. $halfLenght = floor($lenght/ 2);
  15.  
  16. for ($i = 0; $i < $halfLenght; $i++) {
  17. 	$symbol = mb_substr($noSpace, $i, $halfLenght);
  18. 	$symbolBack = mb_substr($noSpace, -$i, $halfLenght); 
  19.  
  20. 	if ($symbol == $symbolBack) {
  21. 		echo $result;
  22.  
  23. 		if ($symbol != $symbolBack) {
  24. 			echo $badResult;
  25. 		}
  26. 	}
  27. }
  28.  
  29.  
Success #stdin #stdout 0.02s 52472KB
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палиндром
https://ideone.com/i3oqWe
language:
PHP (php 7.3.5)
created:
7 years ago
visibility:
public

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