PHP: Getting Last Changed Time of a File – File ctime

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File ctime may be a little misleading in nature as many would think it as the creation time of the file, but actually it’s the meta data such as the ownership or permissions change time of the file in addition to content modification. To get the ctime of a file in PHP:

$last = filectime('anyfile');

Aside from ctime, you may also want to learn about getting the atime and mtime in PHP.