The filemtime() function returns the last modification time of a file. It returns the last modification time of a file as a UNIX timestamp and returns false on failure.
Syntax
filemtime ( file_path );
Parameters
file_path − The path of the file for which the last modification time will be found.
Return
The filemtime() function returns the last modification time of a file as a UNIX timestamp and returns false on failure.
Example
<?php
echo filemtime("info.txt");
?>Output
16127342863
Let us now get the last modification time of a file as a date which is in human readable form.
Example
<?php
echo "Last modification time of the file: ".date("F d Y H:i:s.",filectime("info.txt"));
?>Output
Last modification time of the file: September 24 2018 07:55:51