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  1. <?php
  2.  
  3.  
  4.  
  5. $text = "А роза упала на лапу Азора";
  6. $result ='палиндром';
  7.  
  8. $text = str_replace(" ","",$text);
  9.  
  10. echo mb_strtolower($text);
Runtime error #stdin #stdout #stderr 0.02s 23620KB
stdin
Standard input is empty
stdout
Standard output is empty
stderr
PHP Fatal error:  Uncaught Error: Call to undefined function mb_internal_encoding() in /home/tWHZOz/prog.php:4
Stack trace:
#0 {main}
  thrown in /home/tWHZOz/prog.php on line 4