Hướng dẫn get parent folder php

In PHP, what would be the cleanest way to get the parent directory of the current running script relative to the www root? Assume I have:

$_SERVER['SCRIPT_NAME'] == '/relative/path/to/script/index.php'

Or just:

$something_else == '/relative/path/to/script/'

And I need to get /relative/path/to/ with slashes properly inserted. What would you suggest? A one liner is preferred.

EDIT

I need to get a path relative to the www root, dirname[__FILE__] gives me an absolute path in the filesystem so that won't work. $_SERVER['SCRIPT_NAME'] on the other hand 'starts' at the www root.

asked Dec 10, 2009 at 16:08

Tatu UlmanenTatu Ulmanen

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If your script is located in /var/www/dir/index.php then the following would return:

dirname[__FILE__]; // /var/www/dir

or

dirname[ dirname[__FILE__] ]; // /var/www

Edit

This is a technique used in many frameworks to determine relative paths from the app_root.

File structure:

 /var/
      www/
          index.php
          subdir/
                 library.php

index.php is my dispatcher/boostrap file that all requests are routed to:

define[ROOT_PATH, dirname[__FILE__] ]; // /var/www

library.php is some file located an extra directory down and I need to determine the path relative to the app root [/var/www/].

$path_current = dirname[ __FILE__ ]; // /var/www/subdir
$path_relative = str_replace[ROOT_PATH, '', $path_current]; // /subdir

There's probably a better way to calculate the relative path then str_replace[] but you get the idea.

answered Dec 10, 2009 at 16:09

Mike BMike B

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5

As of PHP 5.3.0 you can use __DIR__ for this purpose.

The directory of the file. If used inside an include, the directory of the included file is returned. This is equivalent to dirname[__ FILE__].

See PHP Magic constants.

C:\www>php --version
PHP 5.5.6 [cli] [built: Nov 12 2013 11:33:44]
Copyright [c] 1997-2013 The PHP Group
Zend Engine v2.5.0, Copyright [c] 1998-2013 Zend Technologies

C:\www>php -r "echo __DIR__;"
C:\www

answered Jan 29, 2014 at 9:08

To get the parentdir of the current script.

$parent_dir = dirname[__DIR__];

answered Apr 17, 2014 at 17:25

hanshans

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If I properly understood your question, supposing your running script is

/relative/path/to/script/index.php

This would give you the parent directory of your running script relative to the document www:

$parent_dir = dirname[dirname[$_SERVER['SCRIPT_NAME']]] . '/';
//$parent_dir will be '/relative/path/to/'

If you want the parent directory of your running script relative to server root:

$parent_dir = dirname[dirname[$_SERVER['SCRIPT_FILENAME']]] . '/';
//$parent_dir will be '/root/some/path/relative/path/to/'

answered May 9, 2011 at 19:19

Marco DemaioMarco Demaio

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2

I Hope this will help you.

echo getcwd[].'
'; // getcwd[] will return current working directory
echo dirname[getcwd[],1].'
';
echo dirname[getcwd[],2].'
';
echo dirname[getcwd[],3].'
';

Output :

C:\wamp64\www\public_html\step
C:\wamp64\www\public_html
C:\wamp64\www
C:\wamp64

answered Jun 2, 2017 at 10:38

Vignesh KMVignesh KM

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Fugly, but this will do it:

substr[$_SERVER['SCRIPT_NAME'], 0, strpos[$_SERVER['SCRIPT_NAME'],basename[$_SERVER['SCRIPT_NAME']]]]

Sliq

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answered Aug 30, 2013 at 20:37

BradBrad

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$dir = dirname[$file] . DIRECTORY_SEPARATOR;

answered Dec 10, 2009 at 16:10

1

Here is what I use since I am not running > 5.2

function getCurrentOrParentDirectory[$type='current']
{
    if [$type == 'current'] {
        $path = dirname[__FILE__];  
    } else {
        $path = dirname[dirname[__FILE__]];
    }
    $position = strrpos[$path, '/'] + 1;
    return substr[$path, $position];
}

Double dirname with file as suggested by @mike b for the parent directory, and current directory is found by just using that syntax once.

Note this function only returns the NAME, slashes have to be added afterwards.

answered Jun 11, 2013 at 0:49

AlexAlex

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This is a function that I use. Created it once so I always have this functionality:

function getDir[]{
    $directory = dirname[__FILE__];
    $directory = explode["/",$directory];
    $findTarget = 0;
    $targetPath = "";
    foreach[$directory as $dir]{
        if[$findTarget == 1]{
            $targetPath = "".$targetPath."/".$dir."";
        }
        if[$dir == "public_html"]{
            $findTarget = 1;
        }
    }
    return "//www.".$_SERVER['SERVER_NAME']."".$targetPath."";
}

answered Feb 11, 2017 at 5:25

1

Try this. Works on both windows or linux server..

str_replace['\\','/',dirname[dirname[__FILE__]]]

answered Jan 15, 2014 at 9:37

This is also a possible solution

$relative = '/relative/path/to/script/';
$absolute = __DIR__. '/../' .$relative;

answered Jun 3, 2015 at 11:12

I hope this will help

function get_directory[]{
    $s = empty[$_SERVER["HTTPS"]] ? '' : [$_SERVER["HTTPS"] == "on"] ? "s" : "";
    $protocol = substr[strtolower[$_SERVER["SERVER_PROTOCOL"]], 0, strpos[strtolower[$_SERVER["SERVER_PROTOCOL"]], "/"]] . $s;
    $port = [$_SERVER["SERVER_PORT"] == "80"] ? "" : [":".$_SERVER["SERVER_PORT"]];
return $protocol . "://" . $_SERVER['SERVER_NAME'] . dirname[$_SERVER['PHP_SELF']];
}
define["ROOT_PATH", get_directory[]."/" ];
echo ROOT_PATH;

answered Mar 2, 2018 at 2:10

Got it myself, it's a bit kludgy but it works:

substr[dirname[$_SERVER['SCRIPT_NAME']], 0, strrpos[dirname[$_SERVER['SCRIPT_NAME']], '/'] + 1]

So if I have /path/to/folder/index.php, this results in /path/to/.

answered Dec 10, 2009 at 17:55

Tatu UlmanenTatu Ulmanen

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1