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mrcl/message-headers
====================

Message Headers library

1.0.2(4y ago)171MITPHPPHP >=7.4CI failing

Since May 12Pushed 4y ago2 watchersCompare

[ Source](https://github.com/devmrcl/php-message-headers)[ Packagist](https://packagist.org/packages/mrcl/message-headers)[ RSS](/packages/mrcl-message-headers/feed)WikiDiscussions main Synced 6d ago

READMEChangelog (3)Dependencies (1)Versions (4)Used By (0)

Message Headers
===============

[](#message-headers)

PHP library containing all permanent and provisional message headers listed in the [IANA registry](https://www.iana.org/assignments/message-headers/message-headers.xhtml).

Installation
------------

[](#installation)

```
composer require mrcl/message-headers

```

Usage
-----

[](#usage)

### HTTP Headers

[](#http-headers)

The `HttpHeader` interface contains all permanent and provisional HTTP headers

```
use Mrcl\Utils\InternetStandards\HttpHeader;

HttpHeader::CONTENT_ENCODING                 // 'Content-Encoding'
HttpHeader::ACCESS_CONTROL_ALLOW_CREDENTIALS // 'Access-Control-Allow-Credentials'
```

#### Permanent HTTP Headers

[](#permanent-http-headers)

```
use Mrcl\Utils\InternetStandards\MessageHeaderFieldNames\Permanent\PermanentHttpHeader;

PermanentHttpHeader::CONTENT_ENCODING
```

#### Provisional HTTP Headers

[](#provisional-http-headers)

```
use Mrcl\Utils\InternetStandards\MessageHeaderFieldNames\Provisional\ProvisionalHttpHeader;

ProvisionalHttpHeader::ACCESS_CONTROL_ALLOW_CREDENTIALS
```

### Mail Headers

[](#mail-headers)

The `MailHeader` interface contains all permanent and provisional mail headers

```
use Mrcl\Utils\InternetStandards\MailHeader;

MailHeader::CC            // 'Cc'
MailHeader::APPARENTLY_TO // 'Apparently-To'
```

#### Permanent Mail Headers

[](#permanent-mail-headers)

```
use Mrcl\Utils\InternetStandards\MessageHeaderFieldNames\Permanent\PermanentMailHeader;

PermanentMailHeader::CC
```

#### Provisional Mail Headers

[](#provisional-mail-headers)

```
use Mrcl\Utils\InternetStandards\MessageHeaderFieldNames\Provisional\ProvisionalMailHeader;

ProvisionalMailHeader::APPARENTLY_TO
```

### MIME Headers

[](#mime-headers)

The `MimeHeader` interface contains all permanent MIME headers

```
use Mrcl\Utils\InternetStandards\MimeHeader;

MimeHeader::CONTENT_TYPE // 'Content-Type'
```

#### Permanent MIME Headers

[](#permanent-mime-headers)

```
use Mrcl\Utils\InternetStandards\MessageHeaderFieldNames\Permanent\PermanentMimeHeader;

PermanentMimeHeader::CONTENT_TYPE
```

### Netnews Headers

[](#netnews-headers)

The `NetnewsHeader` interface contains all permanent and provisional Netnews headers

```
use Mrcl\Utils\InternetStandards\NetnewsHeader;

NetnewsHeader::NEWSGROUPS // 'Newsgroups'
NetnewsHeader::X_PGP_SIG  // 'X-PGP-Sig'
```

#### Permanent Netnews Headers

[](#permanent-netnews-headers)

```
use Mrcl\Utils\InternetStandards\MessageHeaderFieldNames\Permanent\PermanentNetnewsHeader;

PermanentNetnewsHeader::NEWSGROUPS
```

#### Provisional Netnews Headers

[](#provisional-netnews-headers)

```
use Mrcl\Utils\InternetStandards\MessageHeaderFieldNames\Provisional\ProvisionalNetnewsHeader;

ProvisionalNetnewsHeader::X_PGP_SIG
```

###  Health Score

25

—

LowBetter than 37% of packages

Maintenance20

Infrequent updates — may be unmaintained

Popularity7

Limited adoption so far

Community9

Small or concentrated contributor base

Maturity54

Maturing project, gaining track record

 Bus Factor1

Top contributor holds 100% of commits — single point of failure

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 ~63 days

Total

3

Last Release

1704d ago

### Community

Maintainers

![](https://www.gravatar.com/avatar/2f0afa073ac38d579328cc4fab8b93f051ce5d3c88b55300b0359f5e31ea2830?d=identicon)[mrcl](/maintainers/mrcl)

---

Top Contributors

[![devmrcl](https://avatars.githubusercontent.com/u/72648622?v=4)](https://github.com/devmrcl "devmrcl (3 commits)")

---

Tags

HTTP-headermail headermime headernetnews headermessage header

###  Code Quality

TestsPHPUnit

### Embed Badge

![Health badge](/badges/mrcl-message-headers/health.svg)

```
[![Health](https://phpackages.com/badges/mrcl-message-headers/health.svg)](https://phpackages.com/packages/mrcl-message-headers)
```

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