filemtime
int filemtime(string filename) Retrieves a file’s modification time.
Returns:
Time; FALSE on error
Description:
Returns the last modification time of the specified file. The return value is a UNIX timestamp.
Note:
The results of this function are cached. See clearstatcache() for details.
Example:
Print date of last file modification
$filetime = filemtime("myfile");
echo (date("d M Y", $filetime);
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