Чешский язык

    $cz_en = array(
                    'а'=>'a','á'=>'a','b'=>'b','c'=>'c','č'=>'ch','d'=>'d',
                    'ď'=>'d','e'=>'e','é'=>'e','ě'=>'e',
                    'f'=>'f','g'=>'g','h'=>'h','i'=>'i','í'=>'i',
                    'j'=>'j','k'=>'k','l'=>'l','m'=>'m','n'=>'n',
                    'ň'=>'n','o'=>'o','ó'=>'o','p'=>'p','q'=>'q',
                    'ř'=>'r','s'=>'s','š'=>'sch','t'=>'t','ť'=>'t',
                    'ú'=>'u','ů'=>'u','v'=>'v','w'=>'w',
		    'x'=>'x','y'=>'y','ý'=>'y','z'=>'z','ž'=>'z'
                    );
 
    foreach($cz_en as $cz=>$en){
        $slug = str_replace($cz, $en, $slug);
    }

function lang_slug($string){
 
    $string    = strip_tags(trim($string));
    $string    = mb_strtolower($string);
    $string    = str_replace(' ', '-', $string);
 
    $slug = preg_replace ('/[^a-záčéěíňóřšťúůýž0-9\-\/]/u', '-', $string);
    $slug = preg_replace('/([-]+)/i', '-', $slug);
    $slug = trim($slug, '-');
 
    $cz_en  = array(
        'а' => 'a', 'á' => 'a', 'b' => 'b', 'c' => 'c', 'č' => 'ch', 'd' => 'd',
        'ď' => 'd', 'e' => 'e', 'é' => 'e', 'ě' => 'e',
        'f' => 'f', 'g' => 'g', 'h' => 'h', 'i' => 'i', 'í' => 'i',
        'j' => 'j', 'k' => 'k', 'l' => 'l', 'm' => 'm', 'n' => 'n',
        'ň' => 'n', 'o' => 'o', 'ó' => 'o', 'p' => 'p', 'q' => 'q',
        'ř' => 'r', 's' => 's', 'š' => 'sch', 't' => 't', 'ť' => 't',
        'ú' => 'u', 'ů' => 'u', 'v' => 'v', 'w' => 'w',
        'x' => 'x', 'y' => 'y', 'ý' => 'y', 'z' => 'z', 'ž' => 'z'
    );
 
    foreach($cz_en as $cz=>$en){
        $slug = str_replace($cz, $en, $slug);
    }
 
    if (!$slug){ $slug = 'untitled'; }
    if (is_numeric($slug)){ $slug .= strtolower(date('F')); }
 
    return $slug;
 
}