PHPackages cdb/cdb - PHPackages - PHPackages [Skip to content](#main-content)[PHPackages](/)[Directory](/)[Categories](/categories)[Trending](/trending)[Leaderboard](/leaderboard)[Changelog](/changelog)[Analyze](/analyze)[Collections](/collections)[Log in](/login)[Sign up](/register) 1. [Directory](/) 2. / 3. [Database & ORM](/categories/database) 4. / 5. cdb/cdb Abandoned → [wikimedia/cdb](/?search=wikimedia%2Fcdb)Library[Database & ORM](/categories/database) cdb/cdb ======= Constant Database (CDB) wrapper library for PHP. Provides pure-PHP fallback when dba\_\* functions are absent. 3.0.0(2y ago)143.2k8GPL-2.0-or-laterPHPPHP >=7.4.0 Since Nov 12Pushed 2mo ago13 watchersCompare [ Source](https://github.com/wikimedia/cdb)[ Packagist](https://packagist.org/packages/cdb/cdb)[ Docs](https://www.mediawiki.org/wiki/CDB)[ RSS](/packages/cdb-cdb/feed)WikiDiscussions master Synced 1mo ago READMEChangelog (3)Dependencies (7)Versions (11)Used By (0) [![Latest Stable Version](https://camo.githubusercontent.com/7c8ba9d2809c78b65c5101bfb7780592566f40b2b4567a23f1bb07ae29060660/68747470733a2f2f706f7365722e707567782e6f72672f77696b696d656469612f6364622f762f737461626c652e737667)](https://packagist.org/packages/wikimedia/cdb) [![License](https://camo.githubusercontent.com/376b2605b1bc2dc9a265ee2350bd7126be87221951537f060d2880eb58aea7de/68747470733a2f2f706f7365722e707567782e6f72672f77696b696d656469612f6364622f6c6963656e73652e737667)](https://packagist.org/packages/wikimedia/cdb) CDB functions for PHP ===================== [](#cdb-functions-for-php) [CDB](https://en.wikipedia.org/wiki/cdb_(software)), short for "constant database", refers to a very fast and highly reliable database system which uses a simple file with key value pairs. This library wraps the CDB functionality exposed in PHP via the `dba_*` functions. In cases where `dba_*` functions are not present or are not compiled with CDB support, a pure-PHP implementation is provided for falling back. Additional documentation about the library can be found on [mediawiki.org](https://www.mediawiki.org/wiki/CDB). Usage ----- [](#usage) ``` // Reading a CDB file $cdb = Cdb\Reader::open( 'db.cdb' ); $foo = $cdb->get( 'somekey' ); // Writing to a CDB file $cdb = Cdb\Writer::open( 'anotherdb.cdb' ); $cdb->set( 'somekey', $foo ); ``` ``` // Using the CLI $ cdb ./myfile.cdb [get|list|match] ``` Running tests ------------- [](#running-tests) ``` composer install --prefer-dist composer test ``` History ------- [](#history) This library was first introduced in [MediaWiki 1.16](https://www.mediawiki.org/wiki/MediaWiki_1.16) ([r52203](https://www.mediawiki.org/wiki/Special:Code/MediaWiki/52203)). It was split out of the MediaWiki codebase and published as an independent library during the [MediaWiki 1.25](https://www.mediawiki.org/wiki/MediaWiki_1.25) development cycle. --- ### Health Score 47 — FairBetter than 94% of packages Maintenance58 Moderate activity, may be stable Popularity28 Limited adoption so far Community25 Small or concentrated contributor base Maturity69 Established project with proven stability Bus Factor3 3 contributors hold 50%+ of commits How is this calculated?**Maintenance (25%)** — Last commit recency, latest release date, and issue-to-star ratio. Uses a 2-year decay window. **Popularity (30%)** — Total and monthly downloads, GitHub stars, and forks. Logarithmic scaling prevents top-heavy scores. **Community (15%)** — Contributors, dependents, forks, watchers, and maintainers. Measures real ecosystem engagement. **Maturity (30%)** — Project age, version count, PHP version support, and release stability. ### Release Activity Cadence Every ~352 days Recently: every ~659 days Total 10 Last Release 1024d ago Major Versions 1.4.1 → 2.0.02021-12-21 2.1.0 → 3.0.02023-07-24 PHP version history (3 changes)1.0.0PHP >=5.3.2 2.0.0PHP >=7.2.9 2.1.0PHP >=7.4.0 ### Community Maintainers ![](https://www.gravatar.com/avatar/b94d9718c06ec7c3fd7a104bc44966fb7464b9ec7411582343ea35a7a6a85f08?d=identicon)[mediawiki](/maintainers/mediawiki) ![](https://www.gravatar.com/avatar/716c86d71cbf921e7912a505f89d799de398fc0a3af0bd4c8862834b2d642bd7?d=identicon)[wikimedia](/maintainers/wikimedia) --- Top Contributors [![legoktm](https://avatars.githubusercontent.com/u/81392?v=4)](https://github.com/legoktm "legoktm (20 commits)")[![Krinkle](https://avatars.githubusercontent.com/u/156867?v=4)](https://github.com/Krinkle "Krinkle (20 commits)")[![jdforrester](https://avatars.githubusercontent.com/u/881572?v=4)](https://github.com/jdforrester "jdforrester (11 commits)")[![umherirrender](https://avatars.githubusercontent.com/u/1174884?v=4)](https://github.com/umherirrender "umherirrender (10 commits)")[![bd808](https://avatars.githubusercontent.com/u/6469?v=4)](https://github.com/bd808 "bd808 (7 commits)")[![atdt](https://avatars.githubusercontent.com/u/376462?v=4)](https://github.com/atdt "atdt (6 commits)")[![hashar](https://avatars.githubusercontent.com/u/281689?v=4)](https://github.com/hashar "hashar (5 commits)")[![reedy](https://avatars.githubusercontent.com/u/67615?v=4)](https://github.com/reedy "reedy (4 commits)")[![thiemowmde](https://avatars.githubusercontent.com/u/6576639?v=4)](https://github.com/thiemowmde "thiemowmde (4 commits)")[![ricordisamoa](https://avatars.githubusercontent.com/u/4588496?v=4)](https://github.com/ricordisamoa "ricordisamoa (2 commits)")[![DannyS712](https://avatars.githubusercontent.com/u/46829944?v=4)](https://github.com/DannyS712 "DannyS712 (2 commits)")[![paladox](https://avatars.githubusercontent.com/u/5727000?v=4)](https://github.com/paladox "paladox (2 commits)")[![Daimona](https://avatars.githubusercontent.com/u/38216014?v=4)](https://github.com/Daimona "Daimona (1 commits)")[![xSavitar](https://avatars.githubusercontent.com/u/4872561?v=4)](https://github.com/xSavitar "xSavitar (1 commits)") ### Code Quality TestsPHPUnit ### Embed Badge ![Health badge](/badges/cdb-cdb/health.svg) ``` [![Health](https://phpackages.com/badges/cdb-cdb/health.svg)](https://phpackages.com/packages/cdb-cdb) ``` ### Alternatives [doctrine/orm Object-Relational-Mapper for PHP 10.2k285.3M6.2k](/packages/doctrine-orm)[jdorn/sql-formatter a PHP SQL highlighting library 3.9k115.1M102](/packages/jdorn-sql-formatter)[illuminate/database The Illuminate Database package. 2.8k52.4M9.4k](/packages/illuminate-database)[mongodb/mongodb MongoDB driver library 1.6k64.0M546](/packages/mongodb-mongodb)[ramsey/uuid-doctrine Use ramsey/uuid as a Doctrine field type. 90340.3M211](/packages/ramsey-uuid-doctrine)[reliese/laravel Reliese Components for Laravel Framework code generation. 1.7k3.4M16](/packages/reliese-laravel) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)