php - Remove last slash in URL, only if no directory is present -

i trying remove last / url, if there no directory present. there way check if(3 slashes && not https) remove slash? or there better way accomplish trying do?

what have far

$url = preg_replace(array('{http://}', '{/$}'), '', $project->url); 

current outputs:

http://www.example.org/          => www.example.org https://www.example.org/         => https://www.example.org http://www.example.org/dir/      => www.example.org/dir https://www.example.org/dir/     => https://www.example.org/dir http://www.example.org/dir/dir/  => www.example.org/dir/dir https://www.example.org/dir/dir/ => https://www.example.org/dir/dir 

what want get

http://www.example.org/          => www.example.org https://www.example.org/         => https://www.example.org http://www.example.org/dir/      => www.example.org/dir/ https://www.example.org/dir/     => https://www.example.org/dir/ http://www.example.org/dir/dir/  => www.example.org/dir/dir/ https://www.example.org/dir/dir/ => https://www.example.org/dir/dir/ 

you can try this:

$url = preg_replace('~^(?:(https://)|http://)?+([^/]++)(?:(/[^\s"']++)|/)?+~', '$1$2$3', $url); 

or more simple (if $url contains url)

$url = preg_replace('~^(?:(https://)|http://)?+([^/]++)(?:(/.++)|/)?+~', '$1$2$3', $url); 

note these patterns:

www.example.org/ give www.example.org

and

http://www.example.org give www.example.org

second pattern details

~                         # pattern delimiter ^                         # anchor begining of string (?:(https://)|http://)?+  # optional "http(s)://" , "https://"                            # captured in group $1 (not "http://")  ([^/]++)                  # capturing group $2: characters except "/" (?:(/.++)|/)?+            # slash followed characters (capturing group $3)                           # or slash (not captured),                           # part optional "?+" ~                         # pattern delimiter