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Example code of jbzoo/mermaid-php

Informations about the package mermaid-php

JBZoo / Mermaid-PHP

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A powerful PHP library for generating Mermaid diagrams programmatically. Create flowcharts, ER diagrams, class diagrams, and timelines with a fluent, object-oriented API.

Table of Contents

Installation

Install via Composer:

Requirements

Features

✅ Multiple Diagram Types: Flowcharts, ER diagrams, class diagrams, sequence diagrams, and timelines ✅ Fluent API: Intuitive method chaining for building complex diagrams ✅ Multiple Output Formats: Mermaid syntax, HTML with embedded viewer, live editor URLs ✅ Theme Support: Default, forest, dark, and neutral themes ✅ Rich Customization: Nodes, links, relationships, styling, and more ✅ Type Safety: Full PHP type hints and strict typing ✅ Zero Dependencies: Only requires PHP and ext-json

Quick Start

Diagram Types

Flowcharts/Graphs

Create complex flowcharts with nodes, links, and subgraphs:

Result

Open live editor

Clickable nodes

Attach a hyperlink (with an optional tooltip and target) to any node; it renders as a Mermaid click directive:

setUrl() alone is enough; setTooltip() and setTarget() (Node::TARGET_BLANK, TARGET_SELF, TARGET_PARENT, TARGET_TOP) are optional.

Per-link styles

Give an individual link its own CSS; it renders as a linkStyle <index> ... directive. The index is resolved automatically from the link's position in the whole graph (sub-graphs and abc_order included):

The same CSS can be passed through the id-based helper: $graph->addLinkByIds('A', 'B', '', Link::ARROW, 'stroke:blue');.

ER Diagrams

Build entity-relationship diagrams for database schemas:

Result

Open live editor

Timeline Diagrams

Create timeline visualizations for chronological data:

Result

Open live editor

Class Diagrams

Generate UML class diagrams with relationships, namespaces, and cardinality:

Result

Open live editor

Sequence Diagrams

Produces:

Output Formats

All diagram types support multiple output formats:

Mermaid Syntax

HTML with Embedded Viewer

Self-Hosting & Offline (GDPR)

By default the generated page imports Mermaid from a public CDN. When the browser opens the page it sends the visitor's IP to that third party, which can be a GDPR concern and also prevents fully offline rendering. (The old builds also loaded jQuery from a CDN — that dependency has been removed entirely, the generated page is now jQuery-free.)

Use the mermaid descriptor to control how Mermaid is loaded. It binds the build flavor to its source, so there is a single, unambiguous option instead of guessing ESM vs UMD from a URL:

Notes:

Live Editor URL

Development

Setup

Testing

Useful Links

License

MIT

Related Projects

All versions of mermaid-php with dependencies

PHP Build Version
Package Version
Requires php Version ^8.3
ext-json Version *
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