Convert Non-English Characters ç ş ü ö ğ to English
function cleanString($text) {
$utf8 = array(
        '/[áàâãªä]/u'   =>   'a',
        '/[ÁÀÂÃÄ]/u'    =>   'A',
        '/[ÍÌÎÏİ]/u'     =>   'I',
        '/[íìîïı]/u'     =>   'i',
        '/[éèêë]/u'     =>   'e',
        '/[ÉÈÊË]/u'     =>   'E',
        '/[óòôõºö]/u'   =>   'o',
        '/[ÓÒÔÕÖ]/u'    =>   'O',
        '/[úùûü]/u'     =>   'u',
        '/[ÚÙÛÜ]/u'     =>   'U',
        '/ç/'           =>   'c',
        '/ğ/'           =>   'g',
        '/Ğ/'           =>   'G',
        '/ş/'           =>   's',
        '/Ş/'           =>   's',
        '/Ç/'           =>   'C',
        '/ñ/'           =>   'n',
        '/Ñ/'           =>   'N',
        '/–/'           =>   '-',
        '/[’‘‹›‚]/u'    =>   ' ',
        '/[“”«»„]/u'    =>   ' ',
        '/ /'           =>   ' ',
    );
    return preg_replace(array_keys($utf8), array_values($utf8), $text);
}