Microsoft SQL Server text data column and PHP length problems

I’ve had this problem before: PHP truncates results from a SQL Server text field to 4096 characters. (This is running PHP under Apache on Windows.) To save myself having to work out the right Google terms again, this is the solution: change the following in php.ini (note that ini_set doesn’t appear to work:

; Valid range 0 - 2147483647.  Default = 4096.
mssql.textlimit = 2147483647

; Valid range 0 - 2147483647.  Default = 4096.
mssql.textsize = 2147483647