PHP Manual: fileinode

Description

function fileinode(string $filename): int|false

Gets the file inode.

Parameters

filename: Path to the file.

Return Values

Returns the inode number of the file, or false on failure.

Errors/Exceptions

Upon failure, an E_WARNING is emitted.

Examples

Example #1 Comparing the inode of a file with the current file

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

Notes

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

Tip

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.