PHP How to Go One Level Up on Dirname(_File_)

PHP how to go one level up on dirname(__FILE__)

For PHP < 5.3 use:

$upOne = realpath(dirname(__FILE__) . '/..');

In PHP 5.3 to 5.6 use:

$upOne = realpath(__DIR__ . '/..');

In PHP >= 7.0 use:

$upOne = dirname(__DIR__, 1);

Php how to go one level down on dirname(__FILE__)?

Please use double time dirname() function to back one level

dirname(dirname(__FILE__));

Get folder up one level

You could do either:

dirname(__DIR__);

Or:

__DIR__ . '/..';

...but in a web server environment you will probably find that you are already working from current file's working directory, so you can probably just use:

'../'

...to reference the directory above. You can replace __DIR__ with dirname(__FILE__) before PHP 5.3.0.

You should also be aware what __DIR__ and __FILE__ refers to:

The full path and filename of the file. If used inside an include, the name of the included file is returned.

So it may not always point to where you want it to.

Get folder up one level

You could do either:

dirname(__DIR__);

Or:

__DIR__ . '/..';

...but in a web server environment you will probably find that you are already working from current file's working directory, so you can probably just use:

'../'

...to reference the directory above. You can replace __DIR__ with dirname(__FILE__) before PHP 5.3.0.

You should also be aware what __DIR__ and __FILE__ refers to:

The full path and filename of the file. If used inside an include, the name of the included file is returned.

So it may not always point to where you want it to.

Get 2 levels up from dirname( __FILE__)

PHP 5.3+

return dirname(__DIR__);

PHP 5.2 and lower

return dirname(dirname(__FILE__));

With PHP7 go further up the directory tree by specifying the 2nd argument to dirname. Versions prior to 7 will require further nesting of dirname.

http://php.net/manual/en/function.dirname.php

file_get_contents with relative path

Have you tried:

$json = file_get_contents(__DIR__ . '/../validate/edit.json');

__DIR__ is a useful magic constant.

For reasons why, see http://yagudaev.com/posts/resolving-php-relative-path-problem/.

When a PHP file includes another PHP file which itself includes yet another file — all being in separate directories — using relative paths to include them may raise a problem.

PHP will often report that it is unable to find the third file, but why?
Well the answer lies in the fact that when including files in PHP the interpreter tries to find the file in the current working directory.

In other words, if you run the script in a directory called A and you include a script that is found in directory B, then the relative path will be resolved relative to A when executing a script found in directory B.

So, if the script inside directory B includes another file that is in a different directory, the path will still be calculated relative to A not relative to B as you might expect.

php how to go two level up on dirname(__FILE__)

You can use:

realpath(__DIR__ . "/..")

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