filemtime Gets file modification time intfilemtime stringfilename Returns the time the file was last modified, or &false; in case of an error. The time is returned as a Unix timestamp, which is suitable for the date function. The results of this function are cached. See clearstatcache for more details. This function will not work on remote files; the file to be examined must be accessible via the server's filesystem. Note: This function returns the time when the data blocks of a file were being written to, that is, the time when the content of the file was changed. ]]> See also filectime, stat, touch, and getlastmod.