Title: Login deprecated msg
Last modified: March 13, 2023

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# Login deprecated msg

 *  Resolved [luca21](https://wordpress.org/support/users/luca21/)
 * (@luca21)
 * [3 years, 3 months ago](https://wordpress.org/support/topic/login-deprecated-msg/)
 * Hi,
 * I have a local site for development and testing,
 * wp 6.2-RC1-en_US
   php 8.1.6
 * When [http://sitedev.localhost/wp-admin/](http://sitedev.localhost/wp-admin/)“
   Access with username, non email.”
 * The following message also comes out:
 * Deprecated: strlen(): Passing null to parameter #1 ($string) of type string is
   deprecated in /opt/lampp/htdocs/sitedev/wp-includes/formatting.php on line 3493
 * line 3492: // Test for the minimum length the email can be.
 * What is this message?
 * Greetings

Viewing 3 replies - 1 through 3 (of 3 total)

 *  [Alan Fuller](https://wordpress.org/support/users/alanfuller/)
 * (@alanfuller)
 * [3 years, 3 months ago](https://wordpress.org/support/topic/login-deprecated-msg/#post-16555208)
 * It means that passing null to parameter #1 ($string) of type string is deprecated,
   which means that it currently works but may not work in some future version of
   PHP.
   So it is a warning and should not be set to display on a production site,
   not in debug mode. If it is a production site – change your notices and warnings
   settings.
 *  Moderator [Marius L. J.](https://wordpress.org/support/users/clorith/)
 * (@clorith)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/login-deprecated-msg/#post-16599479)
 * You can follow the work on improving compatibility and resolving deprecation 
   notices such as this one in the tickets listed under [https://core.trac.wordpress.org/query?status=!closed&keywords=~php81](https://core.trac.wordpress.org/query?status=!closed&keywords=~php81)
 * As there are overarching tickets to address this issue, I’m going to mark this
   support topic as resolved, as future discussions should ideally happen in a ticket
   🙂
 *  Thread Starter [luca21](https://wordpress.org/support/users/luca21/)
 * (@luca21)
 * [3 years, 2 months ago](https://wordpress.org/support/topic/login-deprecated-msg/#post-16599688)
 * Ok.
 * Thank you so much!

Viewing 3 replies - 1 through 3 (of 3 total)

The topic ‘Login deprecated msg’ is closed to new replies.

 * In: [Alpha/Beta/RC](https://wordpress.org/support/forum/alphabeta/)
 * 3 replies
 * 3 participants
 * Last reply from: [luca21](https://wordpress.org/support/users/luca21/)
 * Last activity: [3 years, 2 months ago](https://wordpress.org/support/topic/login-deprecated-msg/#post-16599688)
 * Status: resolved

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