Function: is_valid_username()

Defined at:

1. /textpattern/lib/txplib_admin.php -> line 1216

Referenced 3 times:

1. /textpattern/include/txp_admin.php -> line 166
2. /textpattern/lib/txplib_admin.php -> line 1265
3. /textpattern/lib/txplib_admin.php -> line 1449