PHP: Detect Time Of Last Modification Of A File

Do you need to find out in PHP, when a file was modified? Then you should take a look at the PHP-function filemtime. This function expects a filename as parameter and returns the modification-time of this file.
Here is an example:

< ?php
echo filemtime('anyfile.html');
?>

This PHP-script will output the timestamp of the last modification of the file anyfile.html.
You can also format this by using the date-function:

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