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rawurldecode()
does not or no longer (I'm on PHP 8.1 right now) acceptnull
as a first param. As such, a deprecation warning occasionally pops up in WordPress' debug log (if it happens to be enabled, of course).By setting it to an empty string instead, this is notice no longer appears.
Also, later on
wp_login_url( $redirect_to )
is run; I checked the documentation forwp_login_url()
and found that the default value for its first argument is an empty string, and that it actually expects a string. I.e., I think a string is okay. :-)