Installation

composer require janalis/viz

Viz needs PHP 8.5 and ext-mbstring. Two extensions are optional:

Extension	What it adds
ext-gd with FreeType	native PNG export
ext-zlib	compressed native PDF export

ext-intl is used when it is there; symfony/polyfill-intl-grapheme stands in for it otherwise.

Command-line tools

No tool is needed for what the native renderer draws. For the rest, Viz looks up each tool on the PATH when it first needs it, or takes a path you give it:

use Janalis\Viz\Viz;

$viz = new Viz(dot: '/opt/graphviz/bin/dot', plantuml: '~/plantuml.jar', mmdc: null);

Tool	Used for	Formats
mermaid-cli (mmdc)	Mermaid the native renderer leaves	SVG, PNG, PDF
Graphviz (dot)	DOT the native renderer leaves	SVG, PNG when dot has libgd, PDF
PlantUML (plantuml or a .jar)	PlantUML the native renderer leaves	SVG, PNG, PDF with the Batik and FOP jars beside it