Problem with Hebrew characters in username

This is not a complete answer, but it’s an attempt at giving you some direction. Hopefully with the community here we can come up with a solution for you!

Firstly, I’ve been able to replicate your issue:

  1. I took your code and placed it in my theme’s functions.php for now.
  2. I removed the if( $strict ) test
  3. I tried registering an 8 character Hebrew name – it worked
  4. I removed your function and tried again – it failed (this confirms your function works)
  5. I added your function and tried with a 9 character Hebrew name – it failed

(for non-Hebrew speakers following along, I just used Google Translate and translated my own name to Hebrew, then dropped characters).

When it didn’t work, the error I got was:

ERROR: Couldn’t register you… please contact the webmaster !

I’ve never seen this error before. It comes from wp-includes/user.php. What this tell us, hunting through the order of this, is that wp_create_user(), and therefore wp_insert_user(), is either returning false or an error object.

wp_insert_user() has a heck of a lot of filters we could potentially plug into to help this work. It may be tripping up one of these.

Alternatively, it may be a database issue. This StackOverflow answer has some ideas for supporting Hebrew characters in a MySQL database. My table encoding was already set to utf8_general_ci but my database itself wasn’t, so I changed that and unfortunately it didn’t resolve it. I also tried running the SET NAMES query through wpdb, but it’s possible it’s not meant to work like that.

Where to from here

I’m hardly a database expert, so I’m not sure if this is a database limitation that we may end up not being able to get around. For now, I think the best chance lies in one of those filters that wp_insert_user() goes through.

I don’t have time right now to hunt through these in depth and work out where it’s tripping up, but hopefully this gives you a decent head start – if I can I’ll come back and see what else I can find.

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