I have a listener that on
needs to query the database looking for a particular entry. Specifically, it's checking for the existence of a file. I currently use `file_exists()` which is super fast. However, for various reasons, I'd like to check the database instead.
E.g. like this:
I've found this is super slow. It appears it's possible to use the built-in database cache system to cache this, but I can't figure out how to make it work.
The API document doesn't seem to provide any hints.
I'd like to do something like this (pseudo code):
Is there an API in phpbb that will help with this?
Code:
'core.text_formatter_s9e_render_before'E.g. like this:
Code:
$sql = 'SELECT 1 FROM phpbb3_external_images WHERE file = "' . $file_name"'; $result = $this->db->sql_query($sql); $exists = $this->db->sql_fetchrow($result) ? true : false; $this->db->sql_freeresult($result);The API document doesn't seem to provide any hints.
I'd like to do something like this (pseudo code):
Code:
$cache_key = 'file_exists_' . $file_name . '_' . $file_ext; $exists = $this->cache->get($cache_key); if ($exists === false) { $sql = 'SELECT 1 FROM phpbb3_external_images WHERE file = "' . $file_name . '" AND ext = "' . $file_ext . '"'; $result = $this->db->sql_query($sql); $exists = $this->db->sql_fetchrow($result) ? true : false; $this->db->sql_freeresult($result); $this->cache->put($cache_key, $exists); } return $exists;Statistics: Posted by tig_ — Wed Jan 08, 2025 2:56 pm