PHP linkinfo() Function: Description, Parameters, Return Value, and Example
This article explains the PHP linkinfo() function, detailing its purpose of retrieving filesystem link information, the required string $path parameter, the return of the st_dev field from lstat (or 0/FALSE on error), and provides a concise usage example.
The article introduces the PHP linkinfo() function, which is used to obtain information about a filesystem link.
Function signature: string linkinfo(string $path) Description: The function verifies whether the specified path points to an existing symbolic link using the same method as the S_ISLNK macro in stat.h. It returns the st_dev field from the UNIX C stat structure obtained via lstat. If an error occurs, the function returns 0 or FALSE.
Parameter: $path – the path to the symbolic link whose information is to be retrieved.
Return value: The st_dev field of the stat structure on success; 0 or FALSE on failure.
Example usage:
<?php
echo linkinfo('/vmlinuz');
// 835
?>Signed-in readers can open the original source through BestHub's protected redirect.
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