Сообшения между пользователями странного вида ((( - JomSocial: Локализация

$allCities = $this->jdecoder($allCities);

    /**
    * Coding change
    * 
    * @param $str string
    * @return string
    */ 	
	private function jdecoder($str) {

		$cyr_chars = array (
			'\u0430' => 'а', '\u0410' => 'А',
			'\u0431' => 'б', '\u0411' => 'Б',
			'\u0432' => 'в', '\u0412' => 'В',
			'\u0433' => 'г', '\u0413' => 'Г',
			'\u0434' => 'д', '\u0414' => 'Д',
			'\u0435' => 'е', '\u0415' => 'Е',
			'\u0451' => 'ё', '\u0401' => 'Ё',
			'\u0436' => 'ж', '\u0416' => 'Ж',
			'\u0437' => 'з', '\u0417' => 'З',
			'\u0438' => 'и', '\u0418' => 'И',
			'\u0439' => 'й', '\u0419' => 'Й',
			'\u043a' => 'к', '\u041a' => 'К',
			'\u043b' => 'л', '\u041b' => 'Л',
			'\u043c' => 'м', '\u041c' => 'М',
			'\u043d' => 'н', '\u041d' => 'Н',
			'\u043e' => 'о', '\u041e' => 'О',
			'\u043f' => 'п', '\u041f' => 'П',
			'\u0440' => 'р', '\u0420' => 'Р',
			'\u0441' => 'с', '\u0421' => 'С',
			'\u0442' => 'т', '\u0422' => 'Т',
			'\u0443' => 'у', '\u0423' => 'У',
			'\u0444' => 'ф', '\u0424' => 'Ф',
			'\u0445' => 'х', '\u0425' => 'Х',
			'\u0446' => 'ц', '\u0426' => 'Ц',
			'\u0447' => 'ч', '\u0427' => 'Ч',
			'\u0448' => 'ш', '\u0428' => 'Ш',
			'\u0449' => 'щ', '\u0429' => 'Щ',
			'\u044a' => 'ъ', '\u042a' => 'Ъ',
			'\u044b' => 'ы', '\u042b' => 'Ы',
			'\u044c' => 'ь', '\u042c' => 'Ь',
			'\u044d' => 'э', '\u042d' => 'Э',
			'\u044e' => 'ю', '\u042e' => 'Ю',
			'\u044f' => 'я', '\u042f' => 'Я',
			'\r' => '',
			'\n' => '<br />',
			'\t' => ''
		);

		foreach ($cyr_chars as $key => $value) {
			$str = str_replace($key, $value, $str);
		}

	  return $str;
	}

<?php
$txt = '{"content":"\u041f\u0440\u0438\u0432\u0435\u0442, \u043a\u0430\u043a \u0434\u0435\u043b\u0430?"}';
$obj_mess = json_decode($txt);
// header для демонстрации
header('Content-Type: text/html; charset=UTF-8');
echo $obj_mess->content;