core.backend Code Reference

By Olivier Mironescu Added: 2026-06-17

core.backend Code Reference

> Sub-sections: 00-init — file structure, environment, setup · 01-files — per-file code inventory

core.backend is a private Composer library of reusable PHP helpers for the UNVRSL ecosystem. It provides utilities such as an HTML template initializer (DocumentShell) and datetime parsing functions — shared across all application projects rather than duplicated.

Repository

Key	Value

Package name	`unvrsl/core-backend`
Remote URL	`git@github.com:olivmiron/core.backend.git`
Type	Composer library (private via VCS)
PHP requirement	`>= 8.1`

Installation

{

  "repositories": [

    {

      "type": "vcs",

      "url": "git@github.com:olivmiron/core.backend.git"

    }

  ],

  "require": {

    "unvrsl/core-backend": "dev-main"

  }

}

Autoloading & Bootstrap

"autoload": {

    "psr-4": {

        "UNVRSL\\Core\\": "src/"

    },

    "files": [

        "bootstrap/init.php"

    ]

}

The files entry ensures bootstrap/init.php is always loaded on every request.

Services

DocumentShell — HTML Template Initializer

Namespace: UNVRSL\Core\htmlTemplateInit\DocumentShell

File: src/htmlTemplateInit/DocumentShell.php

DocumentShell generates clean, standards-compliant HTML document shells.

#### Constructor options

Option

Type

Default

Description

`lang`	`string`	`'en'`	`<html lang="...">` attribute
`title`	`string`	`''`	`<title>` content
`charset`	`string`	`'utf-8'`	`<meta charset="...">`
`viewport`	`string`	`'width=device-width, initial-scale=1'`	Viewport meta tag
`description`	`string`	`''`	`<meta name="description">`
`favicon`	`string`	`''`	Path to favicon
`bodyClass`	`string`	`''`	CSS class on `<body>`
`htmlClass`	`string`	`''`	CSS class on `<html>`
`head`	`array`	`[]`	Additional HTML before `</head>`
`bodyTop`	`array`	`[]`	Additional HTML after `<body>`
`bodyBottom`	`array`	`[]`	Additional HTML before `</body>`

#### Methods

Method

Signature

Description

`open()`	`open(array $config = []): string`	Returns `<!doctype html>` through opening `<body>`
`close()`	`close(array $config = []): string`	Returns closing `</body></html>` plus bodyBottom
`render()`	`render(string $content = '', array $config = []): string`	Full document

#### Example

<?php

require __DIR__ . '/vendor/autoload.php';



use UNVRSL\Core\htmlTemplateInit\DocumentShell;



$doc = new DocumentShell([

    'title'       => 'My App',

    'description' => 'A demo project powered by core.backend',

    'favicon'     => '/favicon.ico',

    'bodyClass'   => 'dark-theme',

    'head'        => ['<link rel="stylesheet" href="/styles.css">'],

    'bodyBottom'  => ['<script src="/app.js"></script>'],

]);



echo $doc->open();

echo '<main><h1>Hello World</h1></main>';

echo $doc->close();

Datetime Parsers

File: src/datetime/datetime-parsers.php

Helpers for parsing, formatting, and manipulating datetime strings. See source for available functions.

Updating

composer update unvrsl/core-backend