CODEWITHSUNDEEP
phpfilesystemsrealpath
Petah
Petah

Reputation: 46040

PHP get absolute path without following symlinks

How do I get the absolute path to a file, without following symlinks.

E.g.

/path/to/some/file
/path/to/some/link -> /path/to/some/file
/path/to/some/directory/

My current working directory is /path/to/some/directory/ and I go realpath('../link) it returns /path/to/some/file.

(I know realpath is supposed to work this way)

Is there a function instead of realpath that would return /path/to/some/link

Upvotes: 2

Views: 1855

Answers (2)

Kaivosukeltaja
Kaivosukeltaja

Reputation: 15735

David Beck wrote a solution that cleans up the relative path components without accessing the actual file system in the comments section of the PHP manual. Alas, he forgot to add a return statement to the function, but otherwise it seems to work great if this is what you need. Also works with URLs.

function canonicalize($address)
{
    $address = explode('/', $address);
    $keys = array_keys($address, '..');

    foreach($keys AS $keypos => $key)
    {
        array_splice($address, $key - ($keypos * 2 + 1), 2);
    }

    $address = implode('/', $address);
    $address = str_replace('./', '', $address);

    return $address;
}

$url = '/path/to/some/weird/directory/../.././link';
echo canonicalize($url); // /path/to/some/link

Upvotes: 3

user2095686
user2095686

Reputation:

there's also getcwd(); which I use quite often. Syntactically simpler.

Upvotes: 2

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