filemtime returns same value before and after modification of file

Question

Im trying to get the last modified time of a file before and after i write to it using fwrite. But, i get the same values for some reason.

Answer 1

Try to add fclose after the fwrite:

<?php
$i = filemtime('log.txt');
echo gmdate("h:i:s", $i);
echo "<br/>";
$e=fopen('log.txt', 'w');
fwrite($e, "well well well");
fclose($e);
$j = filemtime('log.txt');
echo gmdate("h:i:s", $j);
?>

Answer 2

The documentation of filemtime states that results of this function are cached. Maybe you can try it with clearstatcache:

<?php
$i = filemtime('log.txt');
echo gmdate("h:i:s", $i);
echo "<br/>";
$e=fopen('log.txt', 'w');
fwrite($e, "well well well");
clearstatcache();
$j = filemtime('log.txt');
echo gmdate("h:i:s", $j);