(PHP 4, PHP 5, PHP 7)
readlink — Returns the target of a symbolic link
readlink ( string $path ) : string
readlink() does the same as the readlink C function.
path
The symbolic link path.
Returns the contents of the symbolic link path or false on error.
Note: The function fails if
pathis not a symlink, except on Windows, where the normalized path will be returned.
Example #1 readlink() example
<?php
// output e.g. /boot/vmlinux-2.4.20-xfs
echo readlink('/vmlinuz');
?>
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https://www.php.net/manual/en/function.readlink.php