fileatime
(PHP 4, PHP 5)
fileatime — Gets last access time of file
Beskrivelse
Gets the last access time of the given file.
Parameterliste
- filename
-
Path to the file.
Returneringsværdier
Returns the time the file was last accessed, or FALSE in case of an error. The time is returned as a Unix timestamp.
Eksempler
Example#1 fileatime() example
<?php
// outputs e.g. somefile.txt was last accessed: December 29 2002 22:16:23.
$filename = 'somefile.txt';
if (file_exists($filename)) {
echo "$filename was last accessed: " . date("F d Y H:i:s.", fileatime($filename));
}
?>
Notes
Note: The atime of a file is supposed to change whenever the data blocks of a file are being read. This can be costly performance-wise when an application regularly accesses a very large number of files or directories.
Some Unix filesystems can be mounted with atime updates disabled to increase the performance of such applications; USENET news spools are a common example. On such filesystems this function will be useless.
Note: Resultatet af denne funktion er cached. Se clearstatcache() for flere detaljer.
Fra og med PHP 5.0.0 kan denne funktion også bruges med nogle URL wrappers. Se List of Supported Protocols/Wrappers for en liste over hvilke wrappers understøtter stat() familiens funktionalitet.