1. Let’s Exciting on Your
Own PHP!
Kousuke Ebihara
<ebihara@tejimaya.com>

2. 4 OpenPNE 3.2 3.4
• (^o^)
•
• OpenPNE PHP
•
• (Ebinglish)
•

3. Go to our main topic...

4. My “php -i”

5. My “phpinfo()”

6. Let’s Exciting on Your Own PHP
Why do I want to get my own PHP ?

7. What for?
• Improving my work
• Just for fun

8. Use 5.3. And 5.2
• You should use PHP 5.3 for your
developing, if you know about backward
incompatible changes in the version
• Some code for PHP 5.2 may not work
under PHP 5.3 :( But the other way
around if you are careful.
• Use 5.2 when you worry about your script.
(So must ready to use PHP 5.2!)

9. But then ...
• Do you know about the following script is not
work under PHP 5.2? Why?

10. Result

11. Oh, it is just a bug!
http://bugs.php.net/bug.php?id=45820

12. Fixed ... ?

13. Trace changes
• From 16 Jul 2009, PHP is hosted on SVN
and there is a GitHub mirror!
• So you can trace some changes in your git
clone easy
• Let’s tour through changes by using Git

14. Fixed only in PHP 5.3?

15. View changes

16. In PHP 5.2
So dreadful...

17. Talk about something
else
• I’ve written the following code by an oversight in
template (But it is only worked in
“short_open_tag=1” environment):
<?= $var ?>
• And I’ve written the following code too (But it is
only worked in “short_open_tag=0”
environment):
<?xml version=”1.0” encoding=”utf-8”?>
<?php if ($flag): ?>
:

18. A developer of Debian
has the interesting patch
• The patch makes the PHP 5.3 notify
E_DEPRECATED error if the script uses
short open tags (c.f. debian git repository)
• If the feature had been in PHP, I wouldn’t
have gotten the mentioned error.

19. Unfortunately, the patch
may be rejected ...
• [PHP-DEV] Throwing an E_DEPRECATED
for short_open_tag
http://marc.info/?t=126334748600001
• But I really need it!

20. So I want to get
the following PHP 5.3
for improving my work
• Notify errors to code that doesn’t work
under the php 5.2.x
• Notify to environment dependency code
(e.g. short_open_tag)

21. I thought of...
• creating my own PHP!

22. Let’s Exciting on Your Own PHP
Build PHP

23. Knowing the way to
build PHP is important
• You can build many variations of PHP by
your needs
• You can test your script under the specified
version of PHP (e.g. array_unique() is
breaked BC only in PHP 5.2.9)

24. Prepare to build PHP
• Here we get source code from Git repository for our customizing
• http://github.com/php/php-src
• See http://www.php.net/manual/ja/install.unix.php and
http://www.php.net/svn.php
• Combinations of “autoconf”, “automake” and “libtool” is very important.You
may get older version of them by your hand
• If you want to compile Git or SVN version of PHP 5.2, you must prepare flex
2.5.4
• Some program may be not used if you using packaged PHP (because it
contains pre-generated files)
• If you want to use Git version of PHP, please get latest git and git-svn (I got errors
by using git 1.6.5)
• Of course, you must prepare some packages needed by extensions that you want
to use

25. Prepare configuring
(only for SVN and Git version)
• SVN and Git version of PHP don’t have
something to configure
• So you should execute “./buildconf”
• Make sure that you use certain version of
autoconf, automake and libtool. For
example, I specified autoconf and
autoheader to use (in Debian sid)

26. Configure PHP
• You can see the available configure options
by executing “./configure --help”
• Some options is for extension (enable-xxx,
disable-xxx, with-xxx, without-xxx). So you
don’t need to be afraid of options if you
know about your needed extensions
• Build PHP many times is normal

27. My configure options
• http://gist.github.com/277126
• ./configure --enable-mbstring
--with-apxs2=/usr/bin/apxs2
--with-gd --with-mysql --with-pgsql
--with-pdo-mysql=/usr
--with-pdo-pgsql --with-pdo-sqlite
--with-pear --with-jpeg-dir=/usr/lib
--with-curl --with-zlib
• If you want to use multiple php, you may want
to add --with-config-file-path

28. Make and Install
• Do make
• Do make test (I always pass it)
• Do make install
• Compiled php is in sapi/* .You can copy
the binaries or intermediate files by your
hand

29. Let’s Exciting on Your Own PHP
Customize PHP

30. For my working
Add original error level
• I want to add “EE_COMPAT_52” and
“EE_ENV_DEP”
• EE_COMPAT_52 is for notifying “it may
not be working under the php 5.2.x“
• EE_ENV_DEP is for notifying “it may be
environment depended code”
• EE_ is Ebi_Error

31. For my working
Add original error level
• I referred adding E_DEPRECATED commit
• $ git log --grep=”E_DEPRECATED”
• I must rewrite:
• Zend/zend_errors.h : define constants
• Zend/zend.c : zend_error()
• Zend/zend_constants.c : zend_register_standard_constants()
• main/main.c : php_error_cb()
• And notify the new error by zend_error() (in Zend Engine)
and php_error_docref (in PHP)

32. For my working
Add original error level
• Now, I have a patch for realizing this
• Adding EE_COMPAT_52 and EE_ENV_DEP
• http://github.com/ebihara/php-src/commit/
2fdd6fe27188ad3c5878b1fd3a8229e35f84d8fd
• Notice to <?
• http://github.com/ebihara/php-src/commit/
e6706d2b9a576cd81991868d9a8522ba50c37593
• Notice to $list[‘’] = ‘’;
• http://github.com/ebihara/php-src/commit/
1e9484ad04ca03b340bdd51d1f39acee32b86182

33. For my working
Add original error level

34. For my working
Add original error level

35. For my working
Add original error level
• I want to add notices based on
http://www.php.net/manual/ja/
migration53.deprecated.php
• Any idea?

36. For my fun
Insertion ;

37. For my fun
Insertion ;
• ;
• ECMA Script
(Automatic Semicolon Insertion)
• }
•

38. For my fun
Keyword Arguments
• RSS

39. For my fun
Keyword Arguments
• Python

41. Question?