find / grep to list files with php's short_open_tag

[Reindl Harald]

am i stupid or grep? :-)

find /data/www/ -type f -name *.php -exec grep -l -i -n -F "<?" '{}' ;
lists any file which contains  "<?" under the path /data/www/

find /data/www/ -type f -name *.php -exec grep -l -i -n -F "<?\n" '{}' ;
is expected to find any file with "<?" followed directly by a linebreak
but that does not work and if someone finds google empty it was me :-(