(PHP 4, PHP 5, PHP 7)
is_link — Tells whether the filename is a symbolic link
is_link ( string $filename ) : bool
Tells whether the given file is a symbolic link.
filename
Path to the file.
Returns true if the filename exists and is a symbolic link, false otherwise.
Example #1 Create and confirm if a file is a symbolic link
<?php
$link = 'uploads';
if (is_link($link)) {
echo(readlink($link));
} else {
symlink('uploads.php', $link);
}
?> Upon failure, an E_WARNING is emitted.
Note: The results of this function are cached. See clearstatcache() for more details.
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.
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Licensed under the Creative Commons Attribution License v3.0 or later.
https://www.php.net/manual/en/function.is-link.php