Phar, The PHP .exe Format

•

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Helgi Þormar Þorbjörnsson

Technologie

Helgi
Co-founded Orchestra.io
Work at EngineYard
PEAR Developer
From Iceland
@h on Twitter

Friday, 27 January 12

Phar
=
PHP Archive

Friday, 27 January 12

Similar to JAR

... But for PHP

Friday, 27 January 12

Phar

PHP Extension
Built in / default from 5.3 onwards
More Powerful than PHP_Archive

Friday, 27 January 12

PEAR: PHP_Archive

Reference implementation
User Land Code
Less Powerful
Works on older PHP
Not maintained anymore

Friday, 27 January 12

Simple yet flexible
File Format

Friday, 27 January 12

Pack multiple files
into one

Friday, 27 January 12

The special sauce
1. Stub
2. Manifest
3. File Contents
4. Signature (optional)

Friday, 27 January 12

Manifest
List of Files
File Permission
File Compression
Meta Data

Friday, 27 January 12

Compression
Whole Archive
Per ﬁle

Available Compressions

gzip, bz2 and zip

Friday, 27 January 12

Stub

Piece of PHP code
Bootstraping
Autoloader

Friday, 27 January 12

Get all the code used in
this talk and more!

https://github.com/helgi/phar-talk

Friday, 27 January 12

Going more practical

Friday, 27 January 12

Phar works via Streams

Friday, 27 January 12

Streams Usage

fopen / fwrite / fclose
ﬁle_get_contents
opendir / rmdir / mkdir
anything that works with streams

Friday, 27 January 12

Does not extract to disk

Friday, 27 January 12

Works on web and CLI

Friday, 27 January 12

Can be ran without the
extension

Friday, 27 January 12

Full Applications

Friday, 27 January 12

CLI Applications
Pyrus
PHPUnit

Friday, 27 January 12

Setup Tools
go-pear.phar
PEAR installation in PHP builds

Friday, 27 January 12

Executable file for
applications!

Friday, 27 January 12

Pros

Single download with all dependencies
Run multiple versions in parallel
Upgrades are easy
No unpacking
Security against modiﬁcations

Friday, 27 January 12

Cons

Incremental updates (no deltas)
Upgrading is a manual process
Web server may need changes
Extending the application is harder
README / INSTALL become hard to reach

Friday, 27 January 12

Bootstrap for phar

Friday, 27 January 12

Smallest possible Stub

Friday, 27 January 12

__HALT_COMPILER() is a minimum requirement

Friday, 27 January 12

Not used when phar file
is used via streams

Friday, 27 January 12

Phar::interceptFileFuncs()
Phar::mungServer()
Phar::WebPhar

Friday, 27 January 12

No Phar::WebPhar()
Simple ﬁle include
Shebang for easy execution

Friday, 27 January 12

CLI + Autoload
cli.php

a.php

b.php

Friday, 27 January 12

Phar offers a default stub

Friday, 27 January 12

Will work for most

Friday, 27 January 12

Extracts to temp dir if
Phar is not available

Friday, 27 January 12

Works on files inside
the archive

Friday, 27 January 12

Remember, everything
goes via PHP

Extract static ﬁles to a directory
and serve from there

Friday, 27 January 12

Phar disallows
writing by default

Friday, 27 January 12

Suhosin

Enabled by default in Debian and Ubuntu

Friday, 27 January 12

Signatures are used to check the
integrity of the archive

Friday, 27 January 12

Signature
Hashes: OpenSSL
MD5
SHA1
SHA256
SHA512

Friday, 27 January 12

Hashes

By default executable Phar is signed SHA1
Tar / Zip are not unless speciﬁed

Friday, 27 January 12

Phar::mount()

Mount external ﬁles, such as conﬁg, into
the phar archive

Friday, 27 January 12

PharData

Phar archives can be extracted to disk
Can operate on non-phar gzip and tar
extract and compress archives

Like PDO for archives! :-)

Friday, 27 January 12

Useful Tools

phar-util
https://github.com/koto/phar-util
empir
http://empir.sourceforge.net/

Friday, 27 January 12

Come to the winter party tomorrow!
Beer and food is on me :-)

And some awesome swag!

Friday, 27 January 12

Questions?

@h
helgi@engineyard.com

https://github.com/helgi/phar-talk

Joind.in: http://joind.in/4755
Friday, 27 January 12

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Phar, The PHP .exe Format

1. Phar, The PHP .exe format Helgi Þormar Þorbjörnsson PHP Benelux, 27th of January 2012 Friday, 27 January 12

2. Who am I? Friday, 27 January 12

3. Helgi Co-founded Orchestra.io Work at EngineYard PEAR Developer From Iceland @h on Twitter Friday, 27 January 12

4. What is Phar? Friday, 27 January 12

5. Phar = PHP Archive Friday, 27 January 12

6. Similar to JAR ... But for PHP Friday, 27 January 12

7. Phar PHP Extension Built in / default from 5.3 onwards More Powerful than PHP_Archive Friday, 27 January 12

8. PEAR: PHP_Archive Reference implementation User Land Code Less Powerful Works on older PHP Not maintained anymore Friday, 27 January 12

9. Phar unravelled Friday, 27 January 12

10. Simple yet flexible File Format Friday, 27 January 12

11. Pack multiple files into one Friday, 27 January 12

12. Phar Friday, 27 January 12

13. Similar to Tar Friday, 27 January 12

14. The special sauce 1. Stub 2. Manifest 3. File Contents 4. Signature (optional) Friday, 27 January 12

15. Manifest List of Files File Permission File Compression Meta Data Friday, 27 January 12

16. Compression Whole Archive Per ﬁle Available Compressions gzip, bz2 and zip Friday, 27 January 12

17. Stub Piece of PHP code Bootstraping Autoloader Friday, 27 January 12

18. Get all the code used in this talk and more! https://github.com/helgi/phar-talk Friday, 27 January 12

19. Going more practical Friday, 27 January 12

20. Normal Include Friday, 27 January 12

21. Phar Include Friday, 27 January 12

22. Phar works via Streams Friday, 27 January 12

23. Streams Usage fopen / fwrite / fclose ﬁle_get_contents opendir / rmdir / mkdir anything that works with streams Friday, 27 January 12

24. Friday, 27 January 12

25. Does not extract to disk Friday, 27 January 12

26. Works on web and CLI Friday, 27 January 12

27. Can be ran without the extension Friday, 27 January 12

28. Why use Phar? Friday, 27 January 12

29. Full Applications Friday, 27 January 12

30. CLI Applications Pyrus PHPUnit Friday, 27 January 12

31. Web Applications Friday, 27 January 12

32. Setup Tools go-pear.phar PEAR installation in PHP builds Friday, 27 January 12

33. Supporting Code Friday, 27 January 12

34. Plugins Lithium Friday, 27 January 12

35. Themes Friday, 27 January 12

36. Libraries Silex Friday, 27 January 12

37. Handy Packaging! Friday, 27 January 12

38. Executable file for applications! Friday, 27 January 12

39. Pros and Cons Friday, 27 January 12

40. Pros Single download with all dependencies Run multiple versions in parallel Upgrades are easy No unpacking Security against modiﬁcations Friday, 27 January 12

41. Cons Incremental updates (no deltas) Upgrading is a manual process Web server may need changes Extending the application is harder README / INSTALL become hard to reach Friday, 27 January 12

42. Stubs Friday, 27 January 12

43. Bootstrap for phar Friday, 27 January 12

44. Smallest possible Stub Friday, 27 January 12

45. __HALT_COMPILER() is a minimum requirement Friday, 27 January 12

46. Not used when phar file is used via streams Friday, 27 January 12

47. Web Phar Friday, 27 January 12

48. Phar::interceptFileFuncs() Phar::mungServer() Phar::WebPhar Friday, 27 January 12

49. CLI Phar Friday, 27 January 12

50. No Phar::WebPhar() Simple ﬁle include Shebang for easy execution Friday, 27 January 12

51. Web and CLI Phar Friday, 27 January 12

52. CLI + Autoload Friday, 27 January 12

53. CLI + Autoload cli.php a.php b.php Friday, 27 January 12

54. Phar offers a default stub Friday, 27 January 12

55. Will work for most Friday, 27 January 12

56. Extracts to temp dir if Phar is not available Friday, 27 January 12

57. Performance Friday, 27 January 12

58. Works with APC Friday, 27 January 12

59. Works on files inside the archive Friday, 27 January 12

60. Remember, everything goes via PHP Extract static ﬁles to a directory and serve from there Friday, 27 January 12

61. Security Friday, 27 January 12

62. Phar disallows writing by default Friday, 27 January 12

63. Suhosin Enabled by default in Debian and Ubuntu Friday, 27 January 12

64. Signatures are used to check the integrity of the archive Friday, 27 January 12

65. Signature Hashes: OpenSSL MD5 SHA1 SHA256 SHA512 Friday, 27 January 12

66. Hashes By default executable Phar is signed SHA1 Tar / Zip are not unless speciﬁed Friday, 27 January 12

67. Extra Goodies! Friday, 27 January 12

68. Phar::mount() Mount external ﬁles, such as conﬁg, into the phar archive Friday, 27 January 12

69. PharData Phar archives can be extracted to disk Can operate on non-phar gzip and tar extract and compress archives Like PDO for archives! :-) Friday, 27 January 12

70. Useful Tools phar-util https://github.com/koto/phar-util empir http://empir.sourceforge.net/ Friday, 27 January 12

71. Get all the code used in this talk and more! https://github.com/helgi/phar-talk Friday, 27 January 12

72. Come to the winter party tomorrow! Beer and food is on me :-) And some awesome swag! Friday, 27 January 12

73. Questions? @h helgi@engineyard.com https://github.com/helgi/phar-talk Joind.in: http://joind.in/4755 Friday, 27 January 12

Phar, The PHP .exe Format

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