into 2 methods:
convertToExecutable/convertToData. Both methods accept 3 optional parameters
1 archive type, Phar::PHAR, Phar::TAR, or Phar::ZIP
2 compression Phar::NONE, Phar::GZ, or Phar::BZ2
3 file extension. Default is <format>.<compression> where .phar.tar is executable .tar
convertToExecutable always returns a Phar object
convertToData always returns a PharData object
also added Phar::PHAR, Phar::TAR, and Phar::ZIP class constants
[DOC]
5.3 code expects the proposed patch for stream wrapper in include_path to be committed
5.2 code only supports phar stream wrapper in include_path.
this is a 2-step process. After this, more magic, particularly in funcinterceptors.c will be
converted to use phar_resolve_path, which is far safer than the current implementation.
this needs windows and 5.2 testing unix/windows
