<?php
 
error_reporting(-1);
mb_internal_encoding('utf-8');
 
$string = "ааа ааа ааа а";
$result = 'палиндром';
 
$string = mb_strtolower($string);
$halflen = floor(mb_strlen($string)/2);
$masString = preg_split('//u', $string);
for($i = 1; $i <= $halflen; $i++) {
	if ($masString[$i] =! $masString[-($i)]) {
		echo "Строка не {$result}. \n";
		break;
	}
	else {
		echo "Пока что все хорошо";
		if ($i == $halflen) {
			echo "Строка - {$result}.\n";
		}
	}
}
?>

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