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[Parsing & Serialization](/categories/parsing) 4. / 5. smuuf/php-peg ActiveLibrary[Parsing & Serialization](/categories/parsing) smuuf/php-peg ============= PEG parser generator for PHP. 3.1.0(1y ago)13129.3k↓19.7%6[1 PRs](https://github.com/smuuf/php-peg/pulls)3MITPHPPHP >=8.0 Since Nov 1Pushed 1y ago4 watchersCompare [ Source](https://github.com/smuuf/php-peg)[ Packagist](https://packagist.org/packages/smuuf/php-peg)[ Docs](https://github.com/smuuf/php-peg)[ RSS](/packages/smuuf-php-peg/feed)WikiDiscussions master Synced 2w ago READMEChangelog (8)Dependencies (2)Versions (15)Used By (3) PEG parser-generator for PHP ============================ [](#peg-parser-generator-for-php) ### Disclaimer [](#disclaimer) This is a *somehow opinionated* continuation of [combyna/php-peg](https://github.com/combyna/php-peg), which was "a minimally invasive fork" of the original [hafriedlander/php-peg](https://github.com/hafriedlander/php-peg). From the several originally available types of PEG parsers only `Basic` and `Packrat` *(recommended)* remain now. Notable features of this fork: ------------------------------ [](#notable-features-of-this-fork) - **Fix, Optimization**: *Packrat parser overhaul.* Simplified logic using arrays instead of a string. Arrays ultimately seemed to be more fit for the job, *memory-wise*. This also fixed occasional problem with accessing undefined indexes in packrat cache. - **Modern code style:** Codebase uses new *(PHP7+)* language features and code format more familiar to current modern PHP. - **CLI interface is removed:** Just call `\hafriedlander\Peg\Compiler::compile($grammarDefinitionFile)` directly however you like. - **Testing**: Test suite is rewritten to use [`Nette Tester`](https://github.com/nette/tester) instead of [PHPUnit](https://github.com/sebastianbergmann/phpunit). - **Fixed**: Catastrophic backtracking problem *(sometimes happening when compiling a larger grammar)* avoided by simplifying regex that searches for grammar definitions. - **Optimization**: Using native PHP constants and functions with absolute namespace is slightly faster *(changed in generated code, too)*. - **Optimization**: Use strict comparisons where possible *(even in generated code)*. Documentation ------------- [](#documentation) See the [documentation of the original library](https://github.com/hafriedlander/php-peg). ### Health Score 47 — FairBetter than 93% of packages Maintenance33 Infrequent updates — may be unmaintained Popularity41 Moderate usage in the ecosystem Community25 Small or concentrated contributor base Maturity76 Established project with proven stability Bus Factor1 Top contributor holds 62.5% of commits — single point of failure 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 ~279 days Recently: every ~413 days Total 14 Last Release 674d ago Major Versions 1.0.2 → 2.0.02017-03-03 2.2.3 → 3.0.02022-04-25 PHP version history (4 changes)1.0.0PHP >=5.3.0 2.1PHP >=7.0 3.0.0PHP >=7.4 3.1.0PHP >=8.0 ### Community Maintainers ![](https://avatars.githubusercontent.com/u/6860713?v=4)[Přemysl Karbula](/maintainers/smuuf)[@smuuf](https://github.com/smuuf) --- Top Contributors [![smuuf](https://avatars.githubusercontent.com/u/6860713?v=4)](https://github.com/smuuf "smuuf (30 commits)")[![hnesk](https://avatars.githubusercontent.com/u/186821?v=4)](https://github.com/hnesk "hnesk (7 commits)")[![asmblah](https://avatars.githubusercontent.com/u/1714005?v=4)](https://github.com/asmblah "asmblah (3 commits)")[![peter-kolenic](https://avatars.githubusercontent.com/u/3885371?v=4)](https://github.com/peter-kolenic "peter-kolenic (3 commits)")[![djaf77](https://avatars.githubusercontent.com/u/8984222?v=4)](https://github.com/djaf77 "djaf77 (2 commits)")[![uwetews](https://avatars.githubusercontent.com/u/1246127?v=4)](https://github.com/uwetews "uwetews (1 commits)")[![simonwelsh](https://avatars.githubusercontent.com/u/125915?v=4)](https://github.com/simonwelsh "simonwelsh (1 commits)")[![cognifloyd](https://avatars.githubusercontent.com/u/1558590?v=4)](https://github.com/cognifloyd "cognifloyd (1 commits)") --- Tags parserDSLcompilerpeg ### Code Quality Static AnalysisPHPStan Type Coverage Yes ### Embed Badge ![Health badge](/badges/smuuf-php-peg/health.svg) ``` [![Health](https://phpackages.com/badges/smuuf-php-peg/health.svg)](https://phpackages.com/packages/smuuf-php-peg) ``` ### Alternatives [nikic/php-parser A PHP parser written in PHP 17.4k972.9M2.8k](/packages/nikic-php-parser)[doctrine/lexer PHP Doctrine Lexer parser library that can be used in Top-Down, Recursive Descent Parsers. 11.2k980.3M171](/packages/doctrine-lexer)[erusev/parsedown Parser for Markdown. 15.1k158.5M923](/packages/erusev-parsedown)[behat/gherkin Gherkin DSL parser for PHP 1.1k187.8M157](/packages/behat-gherkin)[masterminds/html5 An HTML5 parser and serializer. 1.8k280.1M361](/packages/masterminds-html5)[matomo/device-detector The Universal Device Detection library, that parses User Agents and detects devices (desktop, tablet, mobile, tv, cars, console, etc.), clients (browsers, media players, mobile apps, feed readers, libraries, etc), operating systems, devices, brands and models. 3.5k27.7M213](/packages/matomo-device-detector) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)