Extend the TTL of a key in APC to now + a new ttl (or infinite)
function apc_extend_ttl( string $key, int $new_ttl, ): bool;
If the effective expiration of the key is longer than this, returns FALSE and does nothing.
string $key- The key to bump. If the key is not stored in APC, then FALSE is returned.
int $new_ttl- The new TTL for the key. 0 means infinite TTL.
bool- - TRUE if the TTL was actually extended, FALSE otherwise.