is_link()
is_link() — Tells whether the filename is a symbolic link.
Built-in function of PHP 8.5. The manual lists it as available in PHP 4, PHP 5, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.
Signature
is_link(string $filename): bool
Parameters
| Parameter | Type | What it takes |
|---|---|---|
| $filename | string | Path to the file. |
Return value
Returns true if the filename exists and is a symbolic link, false otherwise.
Example
A runnable snippet:
$link = 'uploads'; if (is_link($link)) { echo readlink($link); } else { symlink('uploads.php', $link); }
See also
is_dir(), is_file(), readlink(), symlink()
All PHP 8.5 built-in functions
Reference card built from the PHP manual page is_link() (PHP documentation, CC BY 3.0). The page is generated from the manual, so the wording of the parameter and return value text follows php.net.