Updated PhpArray to expand paths using __DIR__

[spiffyjr]

When using Apigility config files with __DIR__ are var_exported causing the real path to be written instead. This is an issue for development/production setups where the directory may vary from server to server. This change just does a str_replace on the path of the file being written with the __DIR__ constant.

[Ocramius]

Same for __FILE__

[spiffyjr]

That was fast. @Ocramius do you see anyway to reduce the need to copy the entire toFile() method from the AbstractWriter? I couldn't seem to find a way to make this method less of a copy/pasta.

[weierophinney]

@Ocramius what would be the use case for that in configuration files, exactly? __FILE__ always evaluates to the current file -- I can't think of any time I would reference the config file's path as a configuration value, but __DIR__ would be used often.

[Ocramius]

@weierophinney if magic constants are going to be replaced, then better handle it completely, no?

__LINE__ and __FILE__ are sufficient as a feature-set here.

@spiffyjr the only way I can think of (without subclassing) is passing some kind of visitor to the abstract writer, but that seems overkill for such a small use case

[devosc]

@spiffyjr, override the toString method instead? @Ocramius, looks like __DIR__ is being restored, not replaced.

[DASPRiD]

Just wondering, what about the other writers? They have DIR support as well.