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filemtime> <filegroup
[edit] Last updated: Fri, 14 Jun 2013

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fileinode

(PHP 4, PHP 5)

fileinode取得文件的 inode

说明

int fileinode ( string $filename )

取得文件的 inode。

参数

filename

文件的路径。

返回值

返回文件的 inode 节点号, 或者在失败时返回 FALSE

范例

Example #1 将某个文件和当前文件的 inode 进行对比

<?php
$filename 
'index.php';
if (
getmyinode() == fileinode($filename)) {
    echo 
'You are checking the current file.';
}
?>

错误/异常

失败时抛出E_WARNING警告。

注释

Note: 此函数的结果会被缓存。参见 clearstatcache() 以获得更多细节。

Tip

自 PHP 5.0.0 起, 此函数也用于某些 URL 包装器。请参见 支持的协议和封装协议以获得支持 stat() 系列函数功能的包装器列表。

参见

  • getmyinode() - 获取当前脚本的索引节点(inode)
  • stat() - 给出文件的信息



filemtime> <filegroup
[edit] Last updated: Fri, 14 Jun 2013
 
add a note add a note User Contributed Notes fileinode - [3 notes]
up
-1
meltir at meltir dot com dot nothing
5 years ago
keep in mind that this function is prone to an overflow, and on big filesystems it will return negative values.
up
0
mark nearby techexplained dot com
8 years ago
This function, in spite of its name, also works for directories. Most any valid path in the filesystem will generate an inode value.
up
-1
pixel20 at wp dot pl
5 years ago
Sample function that generates apache 2.2 ETag. Useful for scripts serving images or other cachable data.

$file="example.png";

// Inode
$ETag = dechex(fileinode($file));
// Size
$ETag.= "-".dechex(filesize($file));
// Modification time in useconds & (2^33-1)
$ETag.= "-".dechex(((filemtime($file).str_repeat("0",6)+0) & (8589934591)));

header("ETag: \"$ETag\");

 
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