<?php
error_reporting(-1);
 
$text = "А роза упала на лапу Азора";
$result = "палиндром";
$negativeResult = "не палиндром";
 
$text = mb_strtolower($text);
$text = str_replace(" ", "", $text);
 
$length = floor(mb_strlen($text) / 2);
 
for ($i = 0; $i <= $length; $i ++) {
	$letter1 = mb_substr($text, 0, $i);
	$letter2 = mb_substr($text, -$i);
 
	if ($letter1 = $letter2) {
		echo "$letter1 - $letter2 \n";
 
	} elseif ($letter1 <> $letter2) {
		echo "$negativeResult";
		break;
	}
	}
 
echo "$result";
 

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