Filesystem Functions
PHP Manual


(PHP 4, PHP 5, PHP 7)

statGives information about a file


array stat ( string $filename )

Gathers the statistics of the file named by filename. If filename is a symbolic link, statistics are from the file itself, not the symlink.

lstat() is identical to stat() except it would instead be based off the symlinks status.



Path to the file.

Return Values

stat() and fstat() result format
Numeric Associative Description
0 dev device number
1 ino inode number *
2 mode inode protection mode
3 nlink number of links
4 uid userid of owner *
5 gid groupid of owner *
6 rdev device type, if inode device
7 size size in bytes
8 atime time of last access (Unix timestamp)
9 mtime time of last modification (Unix timestamp)
10 ctime time of last inode change (Unix timestamp)
11 blksize blocksize of filesystem IO **
12 blocks number of 512-byte blocks allocated **
* On Windows this will always be 0.

** Only valid on systems supporting the st_blksize type - other systems (e.g. Windows) return -1.

In case of error, stat() returns FALSE.

Note: Because PHP's integer type is signed and many platforms use 32bit integers, some filesystem functions may return unexpected results for files which are larger than 2GB.


Upon failure, an E_WARNING is emitted.


Example #1 stat() example

/* Get file stat */
$stat stat('C:\php\php.exe');

 * Print file access time, this is the same 
 * as calling fileatime()
echo 'Access time: ' $stat['atime'];

 * Print file modification time, this is the 
 * same as calling filemtime()
echo 'Modification time: ' $stat['mtime'];

/* Print the device number */
echo 'Device number: ' $stat['dev'];

Example #2 Using stat() information together with touch()

/* Get file stat */
$stat stat('C:\php\php.exe');

/* Did we failed to get stat information? */
if (!$stat) {
'stat() call failed...';
} else {
     * We want the access time to be 1 week 
     * after the current access time.
$atime $stat['atime'] + 604800;

/* Touch the file */
if (!touch('some_file.txt'time(), $atime)) {
'Failed to touch file...';
    } else {
'touch() returned success...';



Note that time resolution may differ from one file system to another.

Note: The results of this function are cached. See clearstatcache() for more details.


As of PHP 5.0.0, this function can also be used with some URL wrappers. Refer to Supported Protocols and Wrappers to determine which wrappers support stat() family of functionality.

See Also

Filesystem Functions
PHP Manual