What are the limitations of using PHP to write values to a text file every 60 seconds?

One limitation of using PHP to write values to a text file every 60 seconds is that it can lead to performance issues if the file is constantly being opened, written to, and closed. To solve this, you can keep the file open for writing and only close it after a certain number of writes or after a certain period of time has passed.

<?php

// Set the file path
$file = 'values.txt';

// Open the file for writing
$handle = fopen($file, 'a');

// Write the value to the file
fwrite($handle, "Value to write\n");

// Close the file after every 10 writes
$count++;
if ($count % 10 == 0) {
    fclose($handle);
}

// Close the file after 60 seconds
if (time() - filemtime($file) >= 60) {
    fclose($handle);
}