There are several reasons why we need to save something to a file stored on web server. With me, I usually save web site performance log, error log, debug log and cached content into a file or just want to check if a particular is writable.
Below is my PHP function that writes the contents of string to a file.
Note: please make sure you set write permission for the folder contains that file and the file is writable.
PHP Write File[php] <?php
function write_file($content, $file_name)
$fp = fopen($file_name, ‘w’);
$content = "A content wil be written.";
$file_name = "writable_folder/filename.txt";