disk_free_space
(PHP 4 >= 4.0.7, PHP 5)
disk_free_space — Returns available space in directory
說明
float disk_free_space
( string $directory
)
Given a string containing a directory, this function will return the number of bytes available on the corresponding filesystem or disk partition.
參數
- directory
-
A directory of the filesystem or disk partition.
Note: Given a file name instead of a directory, the behaviour of the function is unspecified and may differ between operating systems and PHP versions.
Return值
Returns the number of available bytes as a float.
範例
Example#1 disk_free_space() example
<?php
// $df contains the number of bytes available on "/"
$df = disk_free_space("/");
// On Windows:
disk_free_space("C:");
disk_free_space("D:");
?>
註釋
Note: 本函式不能作用於遠端檔案，被檢查的檔案必須可經由伺服器的檔案系統存取。