<?php
error_reporting(-1);
mb_internal_encoding('utf-8');
$text = "к";
$result = "палиндром";
$text = mb_strtolower(str_replace(" ", "",$text));
echo $text . "\n";
$length = mb_strlen($text);
$halfLength = floor($length/2);
 
for ($i = 0; $i <= $halfLength; $i++) {
	$left = mb_substr($text, $i, 1);
	$right = mb_substr($text, -$i-1, 1);
	if ($left != $right) {
		echo "Не полиндром";
		break;
	}elseif($i == $halfLength){
		echo $result;
	}
}

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