phpinternalsbook/PHP-Internals-Book resource
PHP Internals Book observed · 2026-08-28
Health v2 · maintenance only
73/100
- Activity 91
- Release rhythm 35
- Longevity 100
Flags: no_releases no_license
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-03. Adoption (stars, forks) is never an input.
- gap_med: n/a
- age_days: 5119
- days_rel: n/a
- days_push: 55
- n_releases_24m: 0
Adoption not part of the score
1436 stars · 179 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
An open-source online book explaining the internals of PHP 7 and PHP 8, covering the build system, zvals, memory management, and C extension development. It is written in ReStructured Text and built with Sphinx, published at phpinternalsbook.com.
Use cases
- learn how the PHP engine works internally
- learn how to write PHP extensions in C
- understand zval and memory management in PHP
- build PHP from source for development
- debug PHP memory issues with valgrind
- understand PHP arrays and Hashtables implementation
When to choose
- you are developing or maintaining PHP extensions in C
- you want deep understanding of the Zend engine, zvals, and memory management
- you need to compile PHP from source for core development
When to avoid
- you want to learn PHP application programming rather than internals
- you need a quick reference rather than in-depth tutorial material
Facets
learning-resource · maturity active
documentation programming-languages tutorials developer-tools cross-platform php php-internals sphinx book c-extensions zend-engine
6 sources
- readme: https://github.com/phpinternalsbook/PHP-Internals-Book · fetched 2026-08-28 · b4efb0ba6e64
- homepage: http://www.phpinternalsbook.com/ · fetched 2026-08-29 · 4b76a1f5a321
- site_page: https://www.phpinternalsbook.com/php7/build_system/building_php.html · fetched 2026-08-29 · d55a7536436c
- site_page: https://www.phpinternalsbook.com/php7/build_system/building_extensions.html · fetched 2026-08-29 · 39b4b9ebf722
- site_page: https://www.phpinternalsbook.com/php7/extensions_design/extension_infos.html · fetched 2026-08-29 · 345ce65cffce
- site_page: https://www.phpinternalsbook.com/php7/memory_management/memory_debugging.html · fetched 2026-08-29 · 85f11b9db368
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| phpinternalsbook/PHP-Internals-Book | main | 73 |
For agents
markdown · JSON · MCP: product_card(name="phpinternalsbook/PHP-Internals-Book")
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem