- Great Painters
- Accounting
- Fundamentals of Law
- Marketing
- Shorthand
- Concept Cars
- Videogames
- The World of Sports

- Blogs
- Free Software
- Google
- My Computer

- PHP Language and Applications
- Wikipedia
- Windows Vista

- Education
- Masterpieces of English Literature
- American English

- English Dictionaries
- The English Language

- Medical Emergencies
- The Theory of Memory
- The Beatles
- Dances
- Microphones
- Musical Notation
- Music Instruments
- Batteries
- Nanotechnology
- Cosmetics
- Diets
- Vegetarianism and Veganism
- Christmas Traditions
- Animals

- Fruits And Vegetables


  1. Accrisoft
  2. Active calendar
  3. ActiveState Komodo
  4. AdLogger
  5. Apache HTTP Server
  6. AutoContent
  7. BakeSale
  8. Bblocked
  9. BBlog
  10. BbPress
  11. Beehive Forum
  12. B2evolution
  13. Bluefish
  14. Chlorine Boards
  15. CMScout
  16. CMSimple
  17. CMS Made Simple
  18. Content Protector
  19. Coppermine Photo Gallery
  20. CRE Loaded
  21. Cutenews
  22. DB DataObject FormBuilder
  23. Divine
  24. Dokeos
  25. DotOrg
  26. Dragonfly CMS
  27. Dreamweaver
  28. Drupal
  29. Dynamic Web page
  30. E107
  31. Eclipse
  32. 25 Essential PHP Functions
  33. FusionBB
  34. Gallery Project
  35. Gedit
  36. Group-Office
  37. HawHaw
  38. IceBB
  39. 4images
  40. Introduction to PHP
  41. Introduction to PHP Learning Guide
  42. IonCube Ltd.
  43. JEdit
  44. Joomla
  45. LAMP
  46. Linux
  47. List of PHP editors
  48. List of PHP libraries
  49. Maguma
  50. Mambo
  51. MediaWiki
  52. MetaBB
  53. Midgard
  54. MiniBB
  55. Monkey Boards
  56. Moodle
  57. MySQL
  58. Ning
  59. Nucleus CMS
  60. Nuke-Evolution
  61. NuSphere Corporation
  62. OpenPHPNuke
  63. Orbit42-Base
  64. OsCommerce
  65. Paamayim Nekudotayim
  66. Phalanger
  67. Php
  68. PHP accelerator
  69. PhpBB
  70. PhpBB Reloaded
  71. PHP Constants
  72. PHPDoc
  73. PhpDocumentor
  74. PHPEdit
  75. PHP Excel Reader
  76. PHP Extension Community Library
  77. PhpGedView
  78. PHP-GTK
  79. PhpLDAPadmin
  80. PHP License
  81. Phplist
  82. PhpMyAdmin
  83. PhpMyVisites
  84. Phpns
  85. PHP-Nuke
  86. PhpPgAdmin
  87. PhpWiki
  88. PmWiki
  89. PostNuke
  90. PSPad
  91. PunBB
  92. PuzzleApps
  93. Quanta Plus
  94. Rasmus Lerdorf
  95. ReallySimpleCMS
  96. Refbase
  97. RGameScript Pro
  98. Santy
  99. SciTE
  100. Serendipity weblog
  101. Simple Machines Forum
  102. SimpleXML
  103. SiteFrame
  104. Smarty
  105. SquirrelMail
  106. Textpattern
  107. Thatware
  108. Think Tank Forums
  109. TikiWiki
  110. TorrentVolve
  111. TYPO3
  112. UBB.threads
  113. UltraEdit
  115. Variables in PHP
  116. VBulletin
  117. WakkaWiki
  118. Web Application Structure for PHP
  119. Webwm
  120. Wikindx
  121. WikkaWiki
  122. WordPress
  123. WordPress MU
  124. Xaraya
  125. XOOPS
  126. Zen Cart
  127. Zend Engine
  128. Zend Studio
  129. Zend Technologies
  130. Zentri
  131. ZPanel


This article is from:

All text is available under the terms of the GNU Free Documentation License: 

PHP accelerator

From Wikipedia, the free encyclopedia


PHP accelerator is the common name given to an extension designed to boost the performance of software applications written using the PHP programming language. Most work by caching the compiled bytecode form of PHP scripts to avoid the overhead on every page request of parsing and compiling source code that may never even get executed. For best performance, caching is to shared memory with direct execution from the shared memory and the minimum of memory copying at runtime. A PHP accelerator typically reduces server load and increases the speed of PHP code anywhere from 2-10 times, depending on factors such as the inherent execution time of the PHP application and the percentage of source code actually executed on a given request. Whilst a code optimizer may even slow down overall performance when used in isolation, an optimizer can provide an additional performance boost when coupled with a code cache as the optimization effort is performed just once.

List of PHP Accelerators

Alternative PHP Cache

Alternative PHP Cache (APC) is a free, open, and robust framework for caching and optimizing PHP intermediate code.

  • Home Page:
  • Latest stable version: 3.0.12p2 (2006-09-05)
  • Download link:
  • Official installation help: inside the source
  • Status: stable, actively maintained
  • PHP version: works with all PHP versions including PHP5.2


eAccelerator was born in December 2004 as a fork of the Turck MMCache project. Turck MMCache was created by Dmitry Stogov and much of the eAccelerator code is still based on his work. eAccelerator also contains a PHP encoder and loader.

  • Home Page:
  • Latest stable version: 0.9.5 (2006-10-11)
  • PHP version: Supports PHP 4 and all PHP 5 releases including 5.2. In older releases, the encoder will only work with PHP versions from the 4.x.x branch. eAccelerator will not work with any other versions of PHP.
  • Download link:
  • Official installation help:
  • Status: Actively maintained
  • Notes: Very good performance


XCache is a fast, stable PHP opcode cacher that has been tested and is now running on production servers under high load. It is tested on linux. ThreadSafe/Windows is also supported. It overcomes a lot of problems that has been with other competing opcachers such as being able to be used with new PHP versions.

  • Home Page:
  • Latest stable version: Latest stable version: 1.0.3-rc1 (2006-10-11)
  • Download link:
  • PHP version: PHP_4_3 PHP_4_4 PHP_5_0 PHP_5_1 PHP_5_2 HEAD(6.x
  • Official installation help:
  • Status: Actively maintained (different releases stable/unstable/devel)
  • Notes: New kid on the block developed by mOo who is also a developer of Lighttpd. Many interesting features. Developed to overcome some of the limitations of the existing solutions at that time.

Zend Optimizer

Zend Optimizer is a closed source solution. Zend Optimizer is purely a code optimizer, and having no code caching feature, it is not an accelerator in the same sense as other entries discussed here. Whilst Zend Optimizer makes good code optimizations and will generally speed execution, the time taken to optimize scripts may exceed the performance gains and yield an overall slowdown. Whilst heavily execution bound scripts may show a measurable speed increase, real world applications may not show any significant performance improvement. It is useful primarily to run some types of protected scripts.

  • Home Page:

Zend Platform

Zend Platform (formerly Zend Cache and then Zend Accelerator) is a commercial product; more than an optimizer that has features that serious developers might find useful. The product was first offered for sale between $995.00 and $1495.00 US dollars per server. This pricing was removed from the website in August 2006 and no new specific pricing was posted.

  • Home Page:

ionCube PHP Accelerator

Launched in 2001, ionCube PHP Accelerator (PHPA) was the first freely available PHP performance solution to match the performance of the commercial Zend Cache product and maximise the performance potential of PHP. Created before ionCube Ltd. was founded and at a time when the performance of PHP was regarded as lacklustre when compared to other popular web programming languages, PHPA made accelerated PHP available to almost everyone and showed that PHP need not be the laggard in the performance stakes. In response to early concerns raised by Zeev Suraski of Zend Technologies about the effect that an open source rival might have on their commercial alternative, the author of PHPA chose to keep the project closed source. Although closed source, the availability of PHPA on a wide variety of platforms led to its extensive adoption world wide from small sites to Yahoo!. It also inspired the redevelopment of APC to use the shared memory execution techniques that PHPA and Zend Cache had adopted instead of deserialization on each request that incurred performance penalties. Other accelerators such as mmcache subsequently appeared in later years. PHPA is now discontinued and the development of a more advanced replacement has been announced.

  • Home Page: /

Turck MMCache

Turck MMCache was considered a great product and many people still use it even though it is now discontinued. The natural upgrade for newer versions of php is eAccelerator.

  • Home Page:

External Links

  • PHP Accelerators on MDLog:/sysadmin
Retrieved from ""