How to open a .json file in a certain namespace - php

Question

It should be easy to load a file using a namespace, but I cannot seem to generate the url to it. The file is located in the same directory as MyClass, where it is called from.
<?php namespace Mynamespace\Subnamespace;
class MyClass {
public function getFile() {
$fileLocation = 'myfile.json'; // file is located next to this class in Mynamespace\Subnamespace\file.json
return file_get_contents( $fileLocation );
}
}
The closest solution I found is using the method getFileName() in a ReflectionClass of MyClass. But that returns the full url including the class MyClass.php file. And using a regExp on that seems overkill, since there is probably an easier solution.
If a namespace can somehow be converted into a valid url, that should do the trick.
How should file.json be retreived?

Answer 1

You can't use namespaces for JSON files. But since it is in the same directory as the class you should be able to use __DIR__
<?php namespace Mynamespace\Subnamespace;
class MyClass {
public function getFile() {
$fileLocation = 'myfile.json';
return file_get_contents( __DIR__ . PATH_SEPARATOR . $fileLocation );
}
}

Answer 2

The easiest way to do this is with get_class
<?php namespace Mynamespace\Subnamespace;
class MyClass {
public function getFile() {
// Will have backslashes so str_replace if this is a Unix environment
$path = str_replace('\\', '/', get_class($this));
$fileLocation = $path . '/myfile.json'; // Mynamespace/Subnamespace/myfile.json
return file_get_contents( $fileLocation );
}
}

Answer 3

If I understand correctly, just this:
$fileLocation = __NAMESPACE__ . '\myfile.json';
See PHP: namespace keyword and __NAMESPACE__ constant.
But since you state "file is located next to this class in Mynamespace\Subnamespace\file.json" then you can just use the full path to the current file:
$fileLocation = __DIR__ . '\myfile.json'; // or dirname(__FILE__)
See PHP: Magic Constants.