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Active1 year, 6 months ago

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:

Or just:

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.

Tatu Ulmanen

Tatu UlmanenTatu Ulmanen

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13 Answers

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

Edit

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

File structure:

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

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

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

Mike BMike B

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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.

Charlie VieillardCharlie Vieillard

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

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

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

Marco DemaioMarco Demaio

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hanshans

Sliq

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BradBrad

Jordan Ryan MooreJordan Ryan Moore

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

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.

AlexAlex

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Vignesh KMVignesh KM

Try this. Works on both windows or linux server.

str_replace(','/',dirname(dirname(__FILE__)))

cestarcestar

collidoscopecollidoscope

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

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JohnJohn

Goodhope Kudakwashe DhliwayoGoodhope Kudakwashe Dhliwayo

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

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

Tatu Ulmanen