# \#psr-15

**URL:** https://discourse.laminas.dev/tag/psr-15/22.md

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## [RFC: Expressive 3 Design Changes](https://discourse.laminas.dev/t/rfc-expressive-3-design-changes/438)

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**Author:** [@matthew](https://discourse.laminas.dev/u/matthew)\
**Replies:** 19\
**Last updated:** [January 25, 2018, 2:35pm UTC](https://discourse.laminas.dev/t/rfc-expressive-3-design-changes/438 "2018-01-25T14:35:19Z")

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zend-stratigility has had a number of refactors put into place for its upcoming version 3. Among these: It will only accept PSR-15 MiddlewareInterface instances to MiddlewarePipe::pipe. MiddlewarePipe::pipe no longer …

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## [PSR-15 compatibility issues and proposal](https://discourse.laminas.dev/t/psr-15-compatibility-issues-and-proposal/378)

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**Author:** [@matthew](https://discourse.laminas.dev/u/matthew)\
**Replies:** 12\
**Last updated:** [December 7, 2017, 2:11pm UTC](https://discourse.laminas.dev/t/psr-15-compatibility-issues-and-proposal/378 "2017-12-07T14:11:42Z")

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A number of repositories have pull requests in place to use webimpress/http-middleware-compatibility in order to allow usage with the various iterations of the PSR-15 specification; this package provides polyfill support…