Question

I want to write the content of a string variable say $data

in to a file named data.xml
the folder location will vary depends upon the content of $appId variable

like i want to write file in

  files_dir/$appId/data.xml

moreover if that file already exists than i want to rewrite otherwise i want to create the folder
and then create the file data.xml

Can u suggest some way to do so.

Answer 1

Open file with write mode “w”. will attempt to create file if does not exists otherwise truncate the file to zero length.

$handle = fopen("files_dir/$appId/data.xml", "w");

Open for writing only; place the file
pointer at the beginning of the file
and truncate the file to zero length.
If the file does not exist, attempt to
create it.

You could check if the directory exists

if (!is_dir("files_dir/$appId")) mkdir("files_dir/$appId",0777);
$handle = fopen("files_dir/$appId/data.xml", "w");

Give the full path of directory and files.