Lot 49: Greg Beaver's blog

I've been a bit busy, my last PHP post was in October (!) but I do have very good news. Following on the heels of my first php|arch article about the Phar extension in the January issue (http://phparch.com/c/magazine/issue/65), I've been extremely hard at work on perfecting this extension. As a testament to the strength and excitement surrounding the upcoming 2.0 release of the phar extension, my editor at php|arch became a developer on the phar extension after reading and working on the article (hi Steph).

Today, I released phar version 2.0.0a1, the first release of the newly upgraded extension. This extension is a wholly different animal from the last release, 1.2.3. While maintaining BC with the 1.2.x version of pecl/phar, this version adds unimaginable new facilities. The phar extension has transformed from something of a sideshow to a major player, and is being actively considered for inclusion in the core of PHP 5.3. Major new features in phar 2.0:

• Phar now supports tar and zip archives with the same API that is supports phar archives. Think of phar as something like the PDO of archive file formats. All phar archives must contain ".phar" in the filename to be executed
• Phar has a front controller for web applications that fully handles MIME types, supports mod_rewrite-like functionality with far more flexibility (a php callback is passed the url, it returns the actual file to load) and also the ability to deny access to portions of the phar that are not web-accessible (like library PHP code)
• Phar fully solves the problems with current directory and code loading/file loading that plague all other stream wrappers like PHP_Archive and PHK. This allows running complex applications like phpMyAdmin with no code modification directly from the original .tgz after a rename and the addition of a 20-line stub
• Phar supports phar:// stream wrappers in include_path for PHP 5.2+, so your require_once-based applications can be pharred up without code modification
• Phar supports creation and modification of data-only tar and zip archives (no executable phar stub) via the PharData class. Now you can use phar to create and even convert between file formats. Unlike the zip extension, phar supports bzip2 compression of files, and has no arbitrary limit on open file handles. Unlike the archive extension in pecl, phar fully supports windows, and is the first PHP extension to deliver read/write support for tar archives on both unix and windows.

In other words, phar 2.0 is the "holy crap" release of phar. The manual (which is currently almost fully updated to the API, but not yet rebuilt) is at http://www.php.net/phar. Another way to get to know phar is through the unit tests, which are included in the pecl tarball.

The current release can be downloaded from http://pecl.php.net/get/phar-2.0.0a1.tgz or installed via pecl install phar and windows dll can be downloaded from http://pecl4win.php.net/ext.php/php_phar.dll although it looks like building is having a few hiccups lately.

There are a few known issues to be worked out. One is compatibility with xdebug, which is a trivial problem involving extension load order. Once we work this out, xdebug will support stepping through the source of files within a phar archive in your IDE, a killer feature for those who need to debug things. In PHP 5.3, phar requires a small patch to support the phar stream wrapper in include_path.

...This brings me to PHP 5.3. I've been working hard with Dmitry Stogov, Marcus Boerger (the other phar lead) and a few other list contributors to perfect a patch that will bring stream wrapper support to include_path. This will mean that you can write a userspace stream wrapper, put its url in your include_path and start using it with relative includes such as what PEAR uses to load its code. This powerful feature will allow you to write your code in one way, and run it from several different locations. Expect to see this feature committed in the next week or so, barring major problems.

Lastly, I'm happy to announce that I will be a speaker at this year's php|tek conference in Chicago. It is the first time I've been able to pull myself away from a crazy-busy quartet schedule to attend a conference, and I look forward very much to meeting as many of you as possible while there. My talk will be on smart PHP application deployment, and covers PEAR, Phar, and the new Pyrus installer for PEAR2 (http://tek.phparch.com/c/schedule/talk/d2s6/1). Unfortunately, the talk is at the same as Josh Eichorn's talk on PEAR2 (http://tek.phparch.com/c/schedule/talk/d2s6/0), so we may need to work out some way to shuttle folks back and forth, we'll have to see .

Progress of the highest order is being made here, expect to hear more about the goings-on behind phar and PEAR2 as time permits.