Crear Slug

function slugify($text) {
$text = utf8_encode($text);
$text = str_replace("á","a",$text);
$text = str_replace("Á","a",$text);
$text = str_replace("é","e",$text);
$text = str_replace("É","e",$text);
$text = str_replace("í","i",$text);
$text = str_replace("Í","i",$text);
$text = str_replace("ó","o",$text);
$text = str_replace("Ó","o",$text);
$text = str_replace("ú","u",$text);
$text = str_replace("ü","u",$text);
$text = str_replace("Ú","u",$text);
$text = str_replace("ñ","n",$text);
$text = str_replace("Ñ","n",$text);

// replace non letter or digits by -
$text = preg_replace('~[^\pL\d]+~u', '-', $text);
// transliterate
$text = iconv('utf-8', 'us-ascii//TRANSLIT', $text);
// remove unwanted characters
$text = preg_replace('~[^-\w]+~', '', $text);
// trim
$text = trim($text, '-');
// remove duplicate -
$text = preg_replace('~-+~', '-', $text);
// lowercase
$text = strtolower($text);
if (empty($text)) {
return 'n-a';
}

return $text;
}