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What is PHP?

PHP is a widely-used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML. If you are new to PHP and want to get some idea of how it works, try the introductory tutorial. After that, check out the online manual, and the example archive sites and some of the other resources available in the links section.

Ever wondered how popular PHP is? see the Netcraft Survey.

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Upcoming Events [add]

April

Conferences

17. PFCongres 2010

User Group Events

15. TriPUG
15. OINK-PUG (Cincinnati, Ohio)
15. Utah PHP Users Group Meeting
15. NorfolkPHP
17. Kansas City
17. Miami Linux Users Group
17. Twin Cities PHP
17. Los Angeles LAMPsig
19. Toronto Area PHP User Group
20. Madison PHP User's Group
20. PHP Brisbane Meetup Group
20. Nashville Enterprise LAMP UG
20. Chattanooga PHP Developers
21. Miami PHP User Group
21. Broward Php Usergroup
21. Nashville PHP Users Group
21. Chicago PHP User Group Brunch
21. Baltimore PHP User Group
22. 3rd ACPHPUG Meeting
24. Sacramento PHP Group
24. Miami Linux Meetup
24. PHP RIO Meetup
24. PHP User Group Hong Kong
26. Long Island PHP Users Group
27. New York
27. AzPHP
27. Malaysia PHP Meetup
27. PHP Usergroup Karlsruhe
27. PHPUG Wuerzburg
27. DCPHP Beverage Subgroup
27. Brisbane PHP User Group
28. Irish PHP Users Group meeting
28. Colorado Springs - FRPUG
28. phpBenelux meeting Belgium
29. Arabic PHP Group Meeting
29. Malaysia PHP User Group Meet Up
29. Sandy PHP Group

May

Conferences

13. phpDay: Italian php Conference
17. DEVCONF::PHPConf 2010 (RUS)
18. TEK·X PHP Conference Chicago
21. PHPCon Poland 2010

User Group Events

01. PHP User Group Hong Kong
02. PHP meeting online in China
02. meeting de LAMPistas en La Paz
04. SW Florida Linux Users Group
04. PDXPHP monthly meeting
04. Jacksonville User Group
04. Berlin PHP Usergroup Meeting
04. PHPNW: PHP North West user group
05. Meeting PHP Usergroup OWL
05. BostonPHP
05. Pittsburgh PHP Meetup Group
06. SDPHP (San Diego, CA)
06. Hannover
06. Meetup Day
06. Omaha PHP Users Group Meetup
06. PHP London
06. The Houston PHP Users Group
06. Boston PHP Meetup
06. Atlanta PHP User Group
06. Manchester UK - PHP Group
06. Sydney PHP Group meetings
06. PHP UG Meetup Auckland
06. Seattle PHP Meetup Group
06. The Copenhagen PHP Meetup Group
06. SF PHP Meetup
06. Knoxville Python & PHP UG
06. Minnesota PHP User Group
06. I PHP-NE - Encontro Nordestino
06. OrlandoPHP User Group
07. Köln/Bonn
07. Iran PHP developer's meetup
08. PHP User Group Nanaimo, BC/CA
08. PEA meeting from phpchina
08. Nagpur PHP Meetup
09. Los Angeles PHP Developers Group
11. Hamburg
11. Dallas PHP/MySQL Users Group
11. Dallas PHP Users Group (DPUG)
11. Austin PHP Meetup
11. OKC PHP Meetup
11. Oklahoma City PHP User Group
11. Buffalo PHP Meetup
12. Wash DC PHP Developers Group
12. PHP User Group Stuttgart
12. Denver - FRPUG
13. Meeting usergroup Dortmund
13. PHP Usergroup Frankfurt/Main
13. Edinburgh PHP Users Group
15. Kansas City
15. Miami Linux Users Group
15. Twin Cities PHP
15. Los Angeles LAMPsig
18. Madison PHP User's Group
18. PHP Brisbane Meetup Group
18. Nashville Enterprise LAMP UG
18. Chattanooga PHP Developers
19. Miami PHP User Group
19. Broward Php Usergroup
19. Nashville PHP Users Group
19. Chicago PHP User Group Brunch
19. Baltimore PHP User Group
20. TriPUG
20. OINK-PUG (Cincinnati, Ohio)
20. Utah PHP Users Group Meeting
20. NorfolkPHP
20. PUG Paris, France (AperoPHP)
22. Sacramento PHP Group
25. New York
25. AzPHP
25. Malaysia PHP Meetup
25. PHP Usergroup Karlsruhe
25. PHPUG Wuerzburg
25. DCPHP Beverage Subgroup
25. Brisbane PHP User Group
26. Irish PHP Users Group meeting
26. Colorado Springs - FRPUG
27. Arabic PHP Group Meeting
27. Malaysia PHP User Group Meet Up
27. Sandy PHP Group
29. Miami Linux Meetup
29. PHP RIO Meetup
31. Long Island PHP Users Group

Training

01. PHP & AJAX -Construindo Websites
01. Core and Advanced PHP Workshop
02. Ahmedabad PHP Group Training
03. MySQL Spain
03. Curso PHP Madrid
03. PHP E-Learning/Germany
03. Curso on-line ActionScript / PHP
03. PHP & MySQL Training in Kassel
03. PHP & MySQL com Dreamweaver MX
03. Curso on-line de PHP
03. PHP & MYSQL-Construindo WebSites
03. PHP Training Heilbronn
03. ZEND: On-line PHPI: Foundations
03. ZEND: On-line PHPII
03. ZEND: On-line PHPI: for i5
03. Formation PHP Expert certifie
04. Curso on-line de PHP-MySQL
04. PHP Class at CalTek
04. ZEND:Security & PHP Applications
04. Linux Apache MySQL PHP/Quebec
05. PHP Training - Chennai - India
05. Zend Certification
06. Curso de PHP Avanzado en Bilbao
07. PHP Training Philippines
10. PHP para Expertos Curso on-line
10. Curso PHP y MySQL
10. ZEND: On-line Studio Course
10. Zend PHP I: Foundations
12. UK Object Orientation Workshop
13. UK Smarty Templating Workshop
16. Learning to Program in PHP
17. PHP & MySQL Training / Gießen
17. PHP Programming
17. ZEND: On-line Test Prep PHP5
17. ZEND: Framework Fundamentals
18. Cursos de PHP en Bilbao
20. Chennai PHP Training
21. Object Oriented programming &PHP
24. PHP Intro Course South Africa
25. UK PHP Training
25. Formation PHP niveau 1 a Paris
26. zend PHP II: Higher Structures
27. PHP Brasil - Training
31. Basic PHP Course
Upcoming conferences:

PHP 5.3.2 Released!

[04-Mar-2010]

The PHP development team is proud to announce the immediate release of PHP 5.3.2. This is a maintenance release in the 5.3 series, which includes a large number of bug fixes.

Security Enhancements and Fixes in PHP 5.3.2:

  • Improved LCG entropy. (Rasmus, Samy Kamkar)
  • Fixed safe_mode validation inside tempnam() when the directory path does not end with a /). (Martin Jansen)
  • Fixed a possible open_basedir/safe_mode bypass in the session extension identified by Grzegorz Stachowiak. (Ilia)

Key Bug Fixes in PHP 5.3.2 include:

  • Added support for SHA-256 and SHA-512 to php's crypt.
  • Added protection for $_SESSION from interrupt corruption and improved "session.save_path" check.
  • Fixed bug #51059 (crypt crashes when invalid salt are given).
  • Fixed bug #50940 Custom content-length set incorrectly in Apache sapis.
  • Fixed bug #50847 (strip_tags() removes all tags greater then 1023 bytes long).
  • Fixed bug #50723 (Bug in garbage collector causes crash).
  • Fixed bug #50661 (DOMDocument::loadXML does not allow UTF-16).
  • Fixed bug #50632 (filter_input() does not return default value if the variable does not exist).
  • Fixed bug #50540 (Crash while running ldap_next_reference test cases).
  • Fixed bug #49851 (http wrapper breaks on 1024 char long headers).
  • Over 60 other bug fixes.

For users upgrading from PHP 5.2 there is a migration guide available here, detailing the changes between those releases and PHP 5.3.

Further information and downloads:

For a full list of changes in PHP 5.3.2, see the ChangeLog. For source downloads please visit our downloads page, Windows binaries can be found on windows.php.net/download/.


PHP 5.2.13 Released!

[25-Feb-2010]

The PHP development team would like to announce the immediate availability of PHP 5.2.13. This release focuses on improving the stability of the PHP 5.2.x branch with over 40 bug fixes, some of which are security related. All users of PHP 5.2 are encouraged to upgrade to this release.

Security Enhancements and Fixes in PHP 5.2.13:

  • Fixed safe_mode validation inside tempnam() when the directory path does not end with a /). (Martin Jansen)
  • Fixed a possible open_basedir/safe_mode bypass in session extension identified by Grzegorz Stachowiak. (Ilia)
  • Improved LCG entropy. (Rasmus, Samy Kamkar)

Further details about the PHP 5.2.13 release can be found in the release announcement, and the full list of changes are available in the ChangeLog.


PHP 5.2.12 Released!

[17-Dec-2009]

The PHP development team would like to announce the immediate availability of PHP 5.2.12. This release focuses on improving the stability of the PHP 5.2.x branch with over 60 bug fixes, some of which are security related. All users of PHP 5.2 are encouraged to upgrade to this release.

Security Enhancements and Fixes in PHP 5.2.12:

  • Fixed a safe_mode bypass in tempnam() identified by Grzegorz Stachowiak. (CVE-2009-3557, Rasmus)
  • Fixed a open_basedir bypass in posix_mkfifo() identified by Grzegorz Stachowiak. (CVE-2009-3558, Rasmus)
  • Added "max_file_uploads" INI directive, which can be set to limit the number of file uploads per-request to 20 by default, to prevent possible DOS via temporary file exhaustion, identified by Bogdan Calin. (CVE-2009-4017, Ilia)
  • Added protection for $_SESSION from interrupt corruption and improved "session.save_path" check, identified by Stefan Esser. (CVE-2009-4143, Stas)
  • Fixed bug #49785 (insufficient input string validation of htmlspecialchars()). (CVE-2009-4142, Moriyoshi, hello at iwamot dot com)

Further details about the PHP 5.2.12 release can be found in the release announcement, and the full list of changes are available in the ChangeLog.


PHP 5.3.1 Released!

[19-Nov-2009]

The PHP development team would like to announce the immediate availability of PHP 5.3.1. This release focuses on improving the stability of the PHP 5.3.x branch with over 100 bug fixes, some of which are security related. All users of PHP are encouraged to upgrade to this release.

Security Enhancements and Fixes in PHP 5.3.1:

  • Added "max_file_uploads" INI directive, which can be set to limit the number of file uploads per-request to 20 by default, to prevent possible DOS via temporary file exhaustion.
  • Added missing sanity checks around exif processing.
  • Fixed a safe_mode bypass in tempnam().
  • Fixed a open_basedir bypass in posix_mkfifo().
  • Fixed failing safe_mode_include_dir.

Further details about the PHP 5.3.1 release can be found in the release announcement, and the full list of changes are available in the ChangeLog.


PHP 5.2.11 Released!

[17-Sep-2009]

The PHP development team would like to announce the immediate availability of PHP 5.2.11. This release focuses on improving the stability of the PHP 5.2.x branch with over 75 bug fixes, some of which are security related. All users of PHP 5.2 are encouraged to upgrade to this release.

Security Enhancements and Fixes in PHP 5.2.11:

  • Fixed certificate validation inside php_openssl_apply_verification_policy. (Ryan Sleevi, Ilia)
  • Fixed sanity check for the color index in imagecolortransparent(). (Pierre)
  • Added missing sanity checks around exif processing. (Ilia)
  • Fixed bug #44683 (popen crashes when an invalid mode is passed). (Pierre)

Further details about the PHP 5.2.11 release can be found in the release announcement, and the full list of changes are available in the ChangeLog.


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