<?php
 
error_reporting(-1);
mb_internal_encoding('utf-8');
 
$text = "А роза упала на лапу Азора";
$result = "Палиндром";
$negative = "не палиндром";
$text = mb_strtolower($text);
$text = str_replace(" ", "", $text);
$length = floor (mb_strlen($text) / 2);
 
for ($i = 1; $i <= $length; $i++){
	$letter1 = mb_substr($text, $i-1, 1);
	$letter2 = mb_substr($text, -$i, 1);
 
	if ($letter1 == $letter2) {
	echo "$letter1 - $letter2\n";}
 
	else {break;}
}
 
if ($i - 1 == $length){
	echo "$result";}
 
 else {
 	echo "$letter1 - $letter2\n$negative";
 }

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