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[Security](/categories/security) 4. / 5. acmephp/core ActiveLibrary[Security](/categories/security) acmephp/core ============ Raw implementation of the ACME protocol in PHP 2.1.0(4y ago)411.0M↓25.5%257MITPHPPHP >=7.2.5CI failing Since Feb 17Pushed 4y ago6 watchersCompare [ Source](https://github.com/acmephp/core)[ Packagist](https://packagist.org/packages/acmephp/core)[ Docs](https://github.com/acmephp/core)[ RSS](/packages/acmephp-core/feed)WikiDiscussions master Synced today READMEChangelogDependencies (7)Versions (24)Used By (7) Acme PHP Core library ===================== [](#acme-php-core-library) [![Build Status](https://camo.githubusercontent.com/954f59585f45e54332360d2712313f4583bb2da33fea69272a2693e80c0369e6/68747470733a2f2f696d672e736869656c64732e696f2f7472617669732f61636d657068702f61636d657068702f6d61737465722e7376673f7374796c653d666c61742d737175617265)](https://travis-ci.org/acmephp/acmephp)[![Quality Score](https://camo.githubusercontent.com/35f72333237c7146c1ba809b824e5c012ff58be4d6f92ff85a440f231ae34abf/68747470733a2f2f696d672e736869656c64732e696f2f7363727574696e697a65722f672f61636d657068702f61636d657068702e7376673f7374796c653d666c61742d737175617265)](https://scrutinizer-ci.com/g/acmephp/acmephp)[![StyleCI](https://camo.githubusercontent.com/37853bde49e35a0b0c76c0e416faa8807cebbbaf37bc7969bc928c295ff8b4e7/68747470733a2f2f7374796c6563692e696f2f7265706f732f35393931303439302f736869656c64)](https://styleci.io/repos/59910490)[![Packagist Version](https://camo.githubusercontent.com/756be0df93674fc6fb87a962bd96ddd8a6fce369ef6ffad0482b935736db2843/68747470733a2f2f696d672e736869656c64732e696f2f7061636b61676973742f762f61636d657068702f61636d657068702e7376673f7374796c653d666c61742d737175617265)](https://packagist.org/packages/acmephp/acmephp)[![Software License](https://camo.githubusercontent.com/55c0218c8f8009f06ad4ddae837ddd05301481fcf0dff8e0ed9dadda8780713e/68747470733a2f2f696d672e736869656c64732e696f2f62616467652f6c6963656e73652d4d49542d627269676874677265656e2e7376673f7374796c653d666c61742d737175617265)](LICENSE) Acme PHP Core is the core of the Acme PHP project : it is a basis for the others more high-level repositories. It consists of a raw implementation of the Let's Encrypt ACME protocol. > If you want to chat with us or have questions, ping @tgalopin or @jderusse on the [Symfony Slack](https://symfony.com/support)! When use Acme PHP Core? ----------------------- [](#when-use-acme-php-core) You usually will want to use either [the Acme PHP CLI client](https://github.com/acmephp/cli)or [an implementation for your application framework](https://github.com/acmephp). However, in some cases, you may want to manage SSL certificates directly from your application. In these cases, this library will be useful to you. Acme PHP Core does nothing more than implementing the [Let's Encrypt/ACME protocol](https://github.com/letsencrypt/acme-spec) : the generated SSL keys and certificates are stored in memory and returned to your script. You are the one in charge of storing them somewhere persistent. Documentation ------------- [](#documentation) Read the official [Acme PHP documentation](https://acmephp.github.io). Launch the Test suite --------------------- [](#launch-the-test-suite) The Acme PHP test suite is located in the main repository: . ### Health Score 46 — FairBetter than 92% of packages Maintenance20 Infrequent updates — may be unmaintained Popularity52 Moderate usage in the ecosystem Community31 Small or concentrated contributor base Maturity68 Established project with proven stability Bus Factor2 2 contributors hold 50%+ of commits 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 ~114 days Recently: every ~224 days Total 21 Last Release 1493d ago Major Versions 1.3.0 → 2.0.02020-12-13 PHP version history (2 changes)1.0.0-alphaPHP >=5.5.0 2.0.0PHP >=7.2.5 ### Community Maintainers ![](https://www.gravatar.com/avatar/bf5cd47f55eb8a801bab7ce80901bada792f1d5fef54678852b118e189e92606?d=identicon)[tgalopin](/maintainers/tgalopin) --- Top Contributors [![jderusse](https://avatars.githubusercontent.com/u/578547?v=4)](https://github.com/jderusse "jderusse (37 commits)")[![tgalopin](https://avatars.githubusercontent.com/u/1651494?v=4)](https://github.com/tgalopin "tgalopin (31 commits)")[![alexsoft](https://avatars.githubusercontent.com/u/1451894?v=4)](https://github.com/alexsoft "alexsoft (4 commits)")[![piotrantosik](https://avatars.githubusercontent.com/u/154553?v=4)](https://github.com/piotrantosik "piotrantosik (2 commits)")[![Grendel7](https://avatars.githubusercontent.com/u/1823324?v=4)](https://github.com/Grendel7 "Grendel7 (2 commits)")[![mgriego](https://avatars.githubusercontent.com/u/186428?v=4)](https://github.com/mgriego "mgriego (2 commits)")[![benjilevens](https://avatars.githubusercontent.com/u/37897020?v=4)](https://github.com/benjilevens "benjilevens (2 commits)")[![TJP85](https://avatars.githubusercontent.com/u/3156231?v=4)](https://github.com/TJP85 "TJP85 (1 commits)")[![elliotfehr](https://avatars.githubusercontent.com/u/5550991?v=4)](https://github.com/elliotfehr "elliotfehr (1 commits)")[![pauladams8](https://avatars.githubusercontent.com/u/37362614?v=4)](https://github.com/pauladams8 "pauladams8 (1 commits)")[![philipsharp](https://avatars.githubusercontent.com/u/1037033?v=4)](https://github.com/philipsharp "philipsharp (1 commits)")[![rokclimb15](https://avatars.githubusercontent.com/u/583271?v=4)](https://github.com/rokclimb15 "rokclimb15 (1 commits)") --- Tags httpsencryptionx509certificatecsropensslsslacmephpletsencrypt ### Embed Badge ![Health badge](/badges/acmephp-core/health.svg) ``` [![Health](https://phpackages.com/badges/acmephp-core/health.svg)](https://phpackages.com/packages/acmephp-core) ``` ### Alternatives [aws/aws-sdk-php AWS SDK for PHP - Use Amazon Web Services in your PHP project 6.3k543.5M2.6k](/packages/aws-aws-sdk-php)[shopware/core Shopware platform is the core for all Shopware ecommerce products. 585.6M572](/packages/shopware-core)[sylius/sylius E-Commerce platform for PHP, based on Symfony framework. 8.5k5.9M735](/packages/sylius-sylius)[acmephp/acmephp Let's Encrypt client written in PHP 650159.8k](/packages/acmephp-acmephp)[shopware/platform The Shopware e-commerce core 3.4k1.5M3](/packages/shopware-platform)[tempest/framework The PHP framework that gets out of your way. 2.2k34.4k15](/packages/tempest-framework) PHPackages © 2026 [Directory](/)[Categories](/categories)[Trending](/trending)[Changelog](/changelog)[Analyze](/analyze)