<?php
 
error_reporting(-1);
mb_internal_encoding('utf-8');
 
$text = "А роза упала на лапу Азора";
$result = "Является полиндромом";
$textWithoutSpace = str_replace(" ", "", $text);
$textLower = mb_strtolower($textWithoutSpace);
$lenghtText = mb_strlen($textLower);
$halfOfLenght = floor($lenghtText/2);
for ($i=0;$i<=$halfOfLenght;$i++)
{
	if ($textLower[$i] != $textLower[$lenghtText-$i]){
		$result = "Не является полиндромом";
		break;
	}
}
echo $result;

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