is_link
(PHP 4, PHP 5, PHP 7, PHP 8)
is_link — Tells whether the filename is a symbolic link
Description
is_link(string
$filename): boolTells whether the given file is a symbolic link.
Parameters
-
filename -
Path to the file.
Return Values
Returns true if the filename exists and is a symbolic link, false
otherwise.
Errors/Exceptions
Upon failure, an E_WARNING is emitted.
Examples
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);
}
?>
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.
See Also
- is_dir() - Tells whether the filename is a directory
- is_file() - Tells whether the filename is a regular file
- readlink() - Returns the target of a symbolic link
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