Save PHP variables to a text file

Question

I was wondering how to save PHP variables to a txt file and then retrieve them again.

Example:

There is an input box, after submitted the stuff that was writ

Answer 1

Personally, I'd use file_put_contents and file_get_contents (these are wrappers for fopen, fputs, etc).

Also, if you are going to write any structured data, such as arrays, I suggest you serialize and unserialize the files contents.

$file = '/tmp/file';
$content = serialize($my_variable);
file_put_contents($file, $content);
$content = unserialize(file_get_contents($file));