Rollbar, Inc. PHP SDK was old, not testable and impossible to use with many modern PHP tools. It stopped their customers from easily signing up. Also, some features supported in other libraries were not there. I refactored the package over many iterations to make it testable. Created a range of PHPUnit tests and significantly improved code coverage. Next I introduced range of best practices to make the package easy to work with for other developers. I also brought the library to feature parity with Rollbar’s Python SDK. Rollbar’s PHP customer has expanded massively. Previously overlooked customer base was now excited about all the love the SDK received and extended their subscription with the company. Up to this day I keep maintaining PHP SDKs, we recently extended our contract indefinitely. less https://rollbar.com