Incorrect toTagsArray return value on empty string

[ashkarpetin]

Not sure if it is a bug. If we pass an empty string to toTagsArray function the result is Array ( [0] => ) and incorrect SQL code is generated: ...AND tag0.name = ''...

[samdark]

It is a bug.

[ashkarpetin]

Well, I can suggest quick solution:

protected function toTagsArray($tags) {
    if(!is_array($tags)){
        $tags = explode(',', trim(strip_tags($tags), ' ,'));
    }

    array_walk($tags, array($this, 'trim'));
    return array_filter($tags, 'strlen');
}

it also fixes the case like: toTagsArray(array('',''))