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[Utility & Helpers](/categories/utility) 4. / 5. ircmaxell/php-cfg ActiveLibrary[Utility & Helpers](/categories/utility) ircmaxell/php-cfg ================= A Control Flow Graph implementation for PHP V0.8.1(1y ago)246113.1k↑782.6%45[10 issues](https://github.com/ircmaxell/php-cfg/issues)[8 PRs](https://github.com/ircmaxell/php-cfg/pulls)2MITPHPPHP >=7.4CI passing Since Feb 23Pushed 2w ago11 watchersCompare [ Source](https://github.com/ircmaxell/php-cfg)[ Packagist](https://packagist.org/packages/ircmaxell/php-cfg)[ RSS](/packages/ircmaxell-php-cfg/feed)WikiDiscussions master Synced 2w ago READMEChangelog (4)Dependencies (4)Versions (14)Used By (2) [![Build Status](https://github.com/ircmaxell/php-cfg/actions/workflows/main.yml/badge.svg)](https://github.com/ircmaxell/php-cfg/actions)[![Latest Stable Version](https://camo.githubusercontent.com/9a6f615988dae2bf55c2a56596f23ecd564c62dd03dab7159763d459f5f43556/68747470733a2f2f706f7365722e707567782e6f72672f6972636d6178656c6c2f7068702d6366672f762f737461626c65)](https://packagist.org/packages/ircmaxell/php-cfg) PHP-CFG ======= [](#php-cfg) Pure PHP implementation of a control flow graph (CFG) with instructions in static single assignment (SSA) form. The used SSA construction algorithm is based on "Simple and Efficient Construction of Static Single Assignment Form" by Braun et al. This algorithm constructs SSA form directly from the abstract syntax tree, without going through a non-SSA IR first. If you're looking for dominance frontiers, you won't find them here... The constructed SSA form is minimal and pure (or is supposed to be). Usage ----- [](#usage) To bootstrap the parser, you need to give it a `PhpParser` instance: ``` $parser = new PHPCfg\Parser( (new PhpParser\ParserFactory)->createForNewestSupportedVersion() ); ``` Then, just call parse on a block of code, giving it a filename: ``` $script = $parser->parse(file_get_contents(__FILE__), __FILE__); ``` While not strictly necessary, you likely should also run the Simplifier Visitor via the Traverser to optimize the CFG (remove redundant jumps and blocks, simplify Phi nodes as much as possible, etc). Other visitors exist to help find function and class declarations (`PHPCfg\Visitor\DeclarationFinder`), find function and method calls (`PHPCfg\Visitor\CallFinder`), and find all variables (`PHPCfg\Visitor\VariableFinder`). You can also implement your own custom `PHPCfg\Visitor` and add it to the traverser in order to apply analysis or transforms to the CFG to achieve different results. ``` $traverser = new PHPCfg\Traverser(); $traverser->addVisitor(new PHPCfg\Visitor\Simplifier()); $traverser->traverse($script); ``` To dump the graph, simply use the built-in dumper: ``` $dumper = new PHPCfg\Printer\Text(); echo $dumper->printScript($script); ``` CLI --- [](#cli) You can leverage the CLI binary to generate debug traces of the CFG for any file, or for printing GraphViz visualizations. ``` bin/php-cfg dot -o output.dot path/to/file.php ``` ### Health Score 60 — FairBetter than 98% of packages Maintenance75 Regular maintenance activity Popularity53 Moderate usage in the ecosystem Community31 Small or concentrated contributor base Maturity68 Established project with proven stability Bus Factor2 2 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 ~338 days Recently: every ~397 days Total 8 Last Release 366d ago Major Versions v0.5.x-dev → v1.0.x-dev2019-03-12 PHP version history (2 changes)v0.5.0PHP ^7.0 v0.6.0PHP >=7.4 ### Community Maintainers ![](https://www.gravatar.com/avatar/c87a667fe5a109ed083ba784409a76f0a18f30b0a05445fbb8ef5e4520b7a6e1?d=identicon)[ircmaxell](/maintainers/ircmaxell) --- Top Contributors [![ircmaxell](https://avatars.githubusercontent.com/u/660654?v=4)](https://github.com/ircmaxell "ircmaxell (156 commits)")[![nikic](https://avatars.githubusercontent.com/u/216080?v=4)](https://github.com/nikic "nikic (73 commits)")[![eric-therond](https://avatars.githubusercontent.com/u/11455652?v=4)](https://github.com/eric-therond "eric-therond (62 commits)")[![mwijngaard](https://avatars.githubusercontent.com/u/273701?v=4)](https://github.com/mwijngaard "mwijngaard (14 commits)")[![PavelJurasek](https://avatars.githubusercontent.com/u/1270132?v=4)](https://github.com/PavelJurasek "PavelJurasek (4 commits)")[![LioTree](https://avatars.githubusercontent.com/u/12847578?v=4)](https://github.com/LioTree "LioTree (4 commits)")[![silverfoxy](https://avatars.githubusercontent.com/u/1313190?v=4)](https://github.com/silverfoxy "silverfoxy (2 commits)")[![royopa](https://avatars.githubusercontent.com/u/442991?v=4)](https://github.com/royopa "royopa (2 commits)")[![thegallagher](https://avatars.githubusercontent.com/u/486626?v=4)](https://github.com/thegallagher "thegallagher (2 commits)")[![ovr](https://avatars.githubusercontent.com/u/572096?v=4)](https://github.com/ovr "ovr (2 commits)")[![sergeyklay](https://avatars.githubusercontent.com/u/1256298?v=4)](https://github.com/sergeyklay "sergeyklay (1 commits)")[![SZFsir](https://avatars.githubusercontent.com/u/24249321?v=4)](https://github.com/SZFsir "SZFsir (1 commits)")[![leestephenn](https://avatars.githubusercontent.com/u/4571662?v=4)](https://github.com/leestephenn "leestephenn (1 commits)")[![villfa](https://avatars.githubusercontent.com/u/2891564?v=4)](https://github.com/villfa "villfa (1 commits)")[![fntlnz](https://avatars.githubusercontent.com/u/3083633?v=4)](https://github.com/fntlnz "fntlnz (1 commits)")[![salmonx](https://avatars.githubusercontent.com/u/8596646?v=4)](https://github.com/salmonx "salmonx (1 commits)")[![samnela](https://avatars.githubusercontent.com/u/1852108?v=4)](https://github.com/samnela "samnela (1 commits)") ### Code Quality TestsPHPUnit Code StylePHP CS Fixer ### Embed Badge ![Health badge](/badges/ircmaxell-php-cfg/health.svg) ``` [![Health](https://phpackages.com/badges/ircmaxell-php-cfg/health.svg)](https://phpackages.com/packages/ircmaxell-php-cfg) ``` ### Alternatives [deptrac/deptrac Deptrac is a static code analysis tool that helps to enforce rules for dependencies between software layers. 3.0k9.8M297](/packages/deptrac-deptrac)[beyondcode/laravel-er-diagram-generator Generate ER diagrams from your Laravel models. 2.0k1.6M2](/packages/beyondcode-laravel-er-diagram-generator)[psalm/plugin-laravel Psalm plugin for Laravel 3345.4M354](/packages/psalm-plugin-laravel)[tempest/framework The PHP framework that gets out of your way. 2.3k37.6k21](/packages/tempest-framework)[brianhenryie/strauss Prefixes dependencies namespaces so they are unique to your plugin 192484.7k41](/packages/brianhenryie-strauss)[boundwize/structarmed Configurable PHP architecture guards — define your layers and rules, then keep them enforced 45751.2k24](/packages/boundwize-structarmed) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)