php sqlite 权限

php官网一段留言

IMPORTANT! just a note: 

weird behaviour when doing an exec on a sqlite db!!!

if want to execute a query on a sqlite db with exec, and your dbfile already was e.g. mode 777, and you get some php errors saying

"SQLite3::exec(): unable to open database file in ...."

and you get crazy while debugging, just add write üermissions to the whole directory for the user the webserver/php runs.

this behaviour makes absolutely NO sense, and is a source of frustration.
at least a more meaningful errormessage would be nice.
i couldnt figure out why sqlite needs write permissions for the whole dir instead of only one file. this is stupid and must be a bug!
(to be secure you have to create a directory with write permissions only for php/apache)

大意是：把数据库放到一个另外文件夹（不影响其他文件），设置读写权限

纠结的是：数据库和数据库所在的文件夹都要可写（可能是因为写数据库时，需要建立一个临时文件）

具体用到就是 chmod