src/storage/BaseFileSystemStorage.php
public function getFilterId($identifier)
    {
        $filter = $this->getFiltersArrayItem($identifier);
        return $filter ? (int) $filter['id'] : false;
    }
public function getFilterId($identifier)
    {
        $filter = $this->getFiltersArrayItem($identifier);
        return $filter ? (int) $filter['id'] : false;
    }
public function getFilterId ( $ identifier ) { $ filter = $ this -> getFiltersArrayItem ( $ identifier ) ; return $ filter ? ( int ) $ filter [ 'id' ] : false ; }
Get the filter id based on the identifier.

This is a short hand method as its used very often

@param string $identifier
@return integer
@since 1.2.2.1
Get the filter id based on the identifier .