PHP filemtime() Function Usage and Example

PHP Filesystem Reference Manual

The filemtime() function returns the time when the file content was last modified. This function can return the last modification time in the form of a Unix timestamp if successful, and return false if it fails.

Syntax

int filemtime ( string $filename )

When writing blocks of data to a file, this function can return the time, that is, the time when the file content was changed.

Online Example

<?php
　　　echo filemtime("sample.txt");　
　　　echo "\n";
　　　echo "Last Modified: ".date("F d Y H:i:s.",filemtime("/PhpProject/sample.txt");
?>

Output Result

1590392449
Last Modified: May　25　2020　09:40:49.

PHP Filesystem Reference Manual