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PHP fstat() Function


PHP Filesystem Reference Complete PHP Filesystem Reference

Definition and Usage

The fstat() function returns information about an open file.

This function returns an array with the following elements:

  • [0] or [dev] - Device number
  • [1] or [ino] - Inode number
  • [2] or [mode] - Inode protection mode
  • [3] or [nlink] - Number of links
  • [4] or [uid] - User ID of owner
  • [5] or [gid] - Group ID of owner
  • [6] or [rdev] - Inode device type
  • [7] or [size] - Size in bytes
  • [8] or [atime] - Last access (as Unix timestamp)
  • [9] or [mtime] - Last modified (as Unix timestamp)
  • [10] or [ctime] - Last inode change (as Unix timestamp)
  • [11] or [blksize] - Blocksize of filesystem IO (if supported)
  • [12] or [blocks] - Number of blocks allocated

Syntax

fstat(file)

Parameter Description
file Required. Specifies the open file to check


Tips and Notes

Note: The results from this function will differ from server to server. The array may contain the number index, the name index, or both.

Tip: This function is similar to stat(), except that with this function the file must be open.


Example

<?php
$file = fopen("test.txt","r");
print_r(fstat($file));
fclose($file);
?>

The output of the code above could be:

Array
(
[0] => 0
[1] => 0
[2] => 33206
[3] => 1
[4] => 0
[5] => 0
[6] => 0
[7] => 92
[8] => 1141633430
[9] => 1141298003
[10] => 1138609592
[11] => -1
[12] => -1
[dev] => 0
[ino] => 0
[mode] => 33206
[nlink] => 1
[uid] => 0
[gid] => 0
[rdev] => 0
[size] => 92
[atime] => 1141633430
[mtime] => 1141298003
[ctime] => 1138609592
[blksize] => -1
[blocks] => -1
)


PHP Filesystem Reference Complete PHP Filesystem Reference

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