item_empty; } /** * checks if the given db names exists in the current list, if there is * missing at least one item it returns false otherwise true * * @return boolean true if all items exists, otherwise false */ public function exists() { $this_elements = $this->getArrayCopy(); foreach (func_get_args() as $result) { if (! in_array($result, $this_elements)) { return false; } } return true; } /** * returns HTML -tags to be used inside * * @param mixed $selected the selected db or true for * selecting current db * @param boolean $include_information_schema whether include information schema * * @return string HTML option tags */ public function getHtmlOptions( $selected = '', $include_information_schema = true ) { if (true === $selected) { $selected = $this->getDefault(); } $options = ''; foreach ($this as $each_item) { if (false === $include_information_schema && $GLOBALS['dbi']->isSystemSchema($each_item) ) { continue; } $options .= '' . "\n"; } return $options; } /** * returns default item * * @return string default item */ public function getDefault() { return $this->getEmpty(); } /** * builds up the list * * @return void */ abstract public function build(); }