| public flushByTag ( string $tag ) : integer | ||
| $tag | string | The tag the entries must have |
| Результат | integer | The number of entries which have been affected by this flush or NULL if the number is unknown |
public function flushByTag($tag)
{
if (!$this->isValidTag($tag)) {
throw new \InvalidArgumentException('"' . $tag . '" is not a valid tag for a cache entry.', 1233057359);
}
if ($this->backend instanceof TaggableBackendInterface) {
return $this->backend->flushByTag($tag);
}
}