PreventXss undefined function ctype_alnum
I originally tried to upgrade to V10 from an older version and during the database upgrade, I got the error:
Fatal error: Call to undefined function ctype_alnum() in /htdocs/wiki/lib/core/TikiFilter/PreventXss.php on line 13
I tried again, but this time overwritting the old database, and I got the same error when tried to access index.php.
I created a fresh install in a new directory with a new database, and got the same error accessing index.php.