limitoco/table-contents

Generate table of contents via PHP

About

Package for generating table of contents for the text.

For example, you have next text:

<h1>Header first level</h1>
Some text here
<h2>Header second level</h2>
Some text here
<h4>Header fourth level</h4>
Some text here
<h3>Header third level</h3>
Some text here

Table of contents will be:

 - Header first level
    - Header second level
            - Header fourth level
         - Header third level

Table of contents support how strict headers nesting and free nesting, i.e. it can be: 1-2-4-3-6-2-4-1-3-7 or 1-2-3-2-4-1-2-3-4-3-5-2-3.

Table of contents work with only <h*> tags 1-10 levels (h1 - h10).

Getting Started

Requirements

PHP 7.1

Installation

1. You can install the package using the composer.

"lutdev/table-contents": "^2.1"

Or install it by running this command in your project root:

composer require lutdev/table-contents

2. PHP class

use Lutdev\TOC\TableContents

or you can download package and include it via require

Usage

$tableContents = new TableContents();

//return string table contents
$tableContents->tableContents($text);

Table of contents have next structure:

"0": {
    "title": "Title",
    "link": "link"
},
"1": {
    "title": "Title",
    "link": "link"
},
"2": {
    "title": "Title",
    "link": "link"
    "subItems": {
        "3": {
            "title": "Title",
            "link": "link"
            "subItems": {
                "1": {
                    "subItems": {
                        "2": {
                            "subItems": {
                                "4": {
                                    "title": "Title",
                                    "link": "link"
                                },
                            }
                        }
                    }
                }
            }
        }
    }
}

• Keys (0,1,2,3,4) - header index number. Keys (1,2 subItems) - intermediate empty headers;
• title - title of the content item;
• link - anchor link. If text have few same headers links of them will be <link>-<number> (for example: link-1, link-2, link-3).

//Add ID attribute to the headers. Need for anchors.
$tableContents->headerLinks($text)

Feedback

Thank you! If you have proposition or find error/bug write me, please.

License

MIT