PHPackages                             larsnieuwenhuizen/e-utilities - PHPackages - PHPackages  [Skip to content](#main-content)[PHPackages](/)[Directory](/)[Categories](/categories)[Trending](/trending)[Leaderboard](/leaderboard)[Changelog](/changelog)[Analyze](/analyze)[Collections](/collections)[Log in](/login)[Sign up](/register)

1. [Directory](/)
2. /
3. [API Development](/categories/api)
4. /
5. larsnieuwenhuizen/e-utilities

AbandonedArchivedLibrary[API Development](/categories/api)

larsnieuwenhuizen/e-utilities
=============================

Php library for communication with the NCBI E-Utilities api

1.0.0(7y ago)0462[1 PRs](https://github.com/LarsNieuwenhuizen/e-utilities/pulls)GPL-3.0-or-laterPHPPHP >=7.1.3

Since Oct 15Pushed 7y ago3 watchersCompare

[ Source](https://github.com/LarsNieuwenhuizen/e-utilities)[ Packagist](https://packagist.org/packages/larsnieuwenhuizen/e-utilities)[ RSS](/packages/larsnieuwenhuizen-e-utilities/feed)WikiDiscussions master Synced 2mo ago

READMEChangelogDependencies (5)Versions (4)Used By (0)

[![Build Status](https://camo.githubusercontent.com/2a40b0711c10c0eb8342d35d9874ac38ee89fe50c4eceeb248306334b525925e/68747470733a2f2f7472617669732d63692e6f72672f4c6172734e69657577656e6875697a656e2f652d7574696c69746965732e7376673f6272616e63683d6d6173746572)](https://travis-ci.org/LarsNieuwenhuizen/e-utilities)[![Maintainability](https://camo.githubusercontent.com/47c713dd90e73615cf115f991536c3f5f757cffc78280ee2a2d9d13a7df74aea/68747470733a2f2f6170692e636f6465636c696d6174652e636f6d2f76312f6261646765732f64656636383937353030366330316364376662332f6d61696e7461696e6162696c697479)](https://codeclimate.com/github/LarsNieuwenhuizen/e-utilities/maintainability)[![Test Coverage](https://camo.githubusercontent.com/03d73795f4d2a4758b2339d5d2a72ca6ffc1465a7a1715bd160a97e39bc245d1/68747470733a2f2f6170692e636f6465636c696d6174652e636f6d2f76312f6261646765732f64656636383937353030366330316364376662332f746573745f636f766572616765)](https://codeclimate.com/github/LarsNieuwenhuizen/e-utilities/test_coverage)[![StyleCI](https://camo.githubusercontent.com/961cedc5c3533a7736f63e2b6aacb170420c263bbf9006870c3b197dfe3f907d/68747470733a2f2f7374796c6563692e696f2f7265706f732f3133323736383833382f736869656c643f6272616e63683d6d6173746572)](https://styleci.io/repos/132768838)[![Latest Stable Version](https://camo.githubusercontent.com/d65b9ddbb29dcf8f3cb3c866cc2b148e69f1ec49c433b50b1ee9be53f7c344b8/68747470733a2f2f706f7365722e707567782e6f72672f6c6172736e69657577656e6875697a656e2f652d7574696c69746965732f762f737461626c65)](https://packagist.org/packages/larsnieuwenhuizen/e-utilities)[![Latest Unstable Version](https://camo.githubusercontent.com/703e00529b773a6a8d2b240be96f6a8ba7ae226c1ff823fbead24b6ba1009bfb/68747470733a2f2f706f7365722e707567782e6f72672f6c6172736e69657577656e6875697a656e2f652d7574696c69746965732f762f756e737461626c65)](https://packagist.org/packages/larsnieuwenhuizen/e-utilities)[![License](https://camo.githubusercontent.com/867a6e0012491752d4558731d8cc75b83b331a7ba56078f520215c8ed682f22c/68747470733a2f2f706f7365722e707567782e6f72672f6c6172736e69657577656e6875697a656e2f652d7574696c69746965732f6c6963656e7365)](https://packagist.org/packages/larsnieuwenhuizen/e-utilities)[![Documentation Status](https://camo.githubusercontent.com/f4763024ab80530832ff03393f89ea28af0885fbbae750718c3bdf36d3f17623/68747470733a2f2f72656164746865646f63732e6f72672f70726f6a656374732f652d7574696c69746965732f62616467652f3f76657273696f6e3d6c6174657374)](https://e-utilities.readthedocs.io/en/latest/?badge=latest)

E-Utilities
===========

[](#e-utilities)

This php library is meant to serve as an abstraction layer to communicate with the [NCBI E-Utilities](https://www.ncbi.nlm.nih.gov/books/NBK25499/) using simple php objects. The E-Utilities have a variation of different calls.

- EInfo
- ESearch
- EPost
- ESummary
- EFetch
- ELink
- EGQuery
- ESpell
- ECitMatch

More information on the in-depth details of the calls can be found [here](https://www.ncbi.nlm.nih.gov/books/NBK25501/)

Current state of this library
-----------------------------

[](#current-state-of-this-library)

The implemented objects usable at this moment are:

- [EInfo](https://e-utilities.readthedocs.io/en/latest/Utilities/EInfo.html)
- [ESearch](https://e-utilities.readthedocs.io/en/latest/Utilities/ESearch.html)
- [ESummary](https://e-utilities.readthedocs.io/en/latest/Utilities/ESummary.html)

Details are in the documentation

### API Key

[](#api-key)

As of december 2018 NCBI requires the usage of an api key. You can create one [here](https://www.ncbi.nlm.nih.gov/account/settings/).

Once you've got an api key, add it in your .env file and call it `NCBI_API_KEY`

### Note

[](#note)

Not all pararmeters NCBI supports are implemented in the objects. These will be implemented in time. For the current state either take a look in the code. Or check the documentation later this year. I'll try to work on it as much as I can.

The details for the separate EUtility objects and there usage can be found in the documentation.

###  Health Score

27

—

LowBetter than 49% of packages

Maintenance20

Infrequent updates — may be unmaintained

Popularity9

Limited adoption so far

Community10

Small or concentrated contributor base

Maturity59

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 ~1 days

Total

2

Last Release

2764d ago

### Community

Maintainers

![](https://www.gravatar.com/avatar/97544bd744bf40a6da900dca3f865c9a4c819e4e115eafcea88fa674157d8651?d=identicon)[lars.nieuwenhuizen](/maintainers/lars.nieuwenhuizen)

---

Top Contributors

[![LarsNieuwenhuizen](https://avatars.githubusercontent.com/u/479364?v=4)](https://github.com/LarsNieuwenhuizen "LarsNieuwenhuizen (6 commits)")

###  Code Quality

TestsPHPUnit

Code StylePHP\_CodeSniffer

### Embed Badge

![Health badge](/badges/larsnieuwenhuizen-e-utilities/health.svg)

```
[![Health](https://phpackages.com/badges/larsnieuwenhuizen-e-utilities/health.svg)](https://phpackages.com/packages/larsnieuwenhuizen-e-utilities)
```

###  Alternatives

[netflie/whatsapp-cloud-api

The first PHP SDK to send and receive messages using a cloud-hosted version of the WhatsApp Business Platform

640431.7k4](/packages/netflie-whatsapp-cloud-api)[tencentcloud/tencentcloud-sdk-php

TencentCloudApi php sdk

3731.2M42](/packages/tencentcloud-tencentcloud-sdk-php)[jasara/php-amzn-selling-partner-api

A fluent interface for Amazon's Selling Partner API in PHP

1344.8k1](/packages/jasara-php-amzn-selling-partner-api)[hardcastle/xrpl_php

PHP SDK / Client for the XRP Ledger

129.7k5](/packages/hardcastle-xrpl-php)[aedart/athenaeum

Athenaeum is a mono repository; a collection of various PHP packages

245.2k](/packages/aedart-athenaeum)[mapado/rest-client-sdk

Rest Client SDK for hydra API

1125.9k2](/packages/mapado-rest-client-sdk)

PHPackages © 2026

[Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)