Redis - Check if key exists using predis
11,328
Yes. Since your key is essentially just the user name, you can just see if the key exists. You can use Redis' EXISTS
for this:
public function checkUserExists($username)
{
return $this->predis->exists("user:{$username}");
}
The speed difference between the two will be very, very small, but using exists
will make your code a bit cleaner.
Author by
BugHunterUK
Updated on June 13, 2022Comments
-
BugHunterUK almost 2 years
Using
predis
is it possible to check if a key exists?My
users
data is stored as follows:public function createUser($email, $password, $username) { return $this->predis->hMset("user:{$username}", [ 'email' => $email, 'password' => $password, 'username' => $username ]); }
Now, when I check to see if a user exists I do the following:
public function checkUserExists($username) { return $this->predis->hExists("user:{$username}", 'username'); }
Is it possible to check if the user exists without having to check if the key exists? For example by just checking
user:{$username}
? -
BugHunterUK over 8 yearsThanks. I ended up solving my problem a different way as I also needed to check if both email, and username, already exist (separately). I used a set for emails, and a set for username and then used exists to check Thanks.