Hi,
Gatling is framework and programming language agnostic as it works on the HTTP level. So, yes, it will work with all PHP frameworks.
Here is a list of things that would make you choose Gatling :
- Great HTML5 reports
- Support of complex scenarios
- Easy to write checks for asserting the correct execution of your scenarios (Regex, CSS selector, JsonPath etc.)
- Easy to integrate with Graphite, Jenkins etc.
Wrk is more of tool in the category of "Apache Benchmark (ab)" - it will only test one single query.
So, if you look for the raw throughput of a web server / framework, wrk is probably a tool to look at. But, if you are interested in testing a website or anything that is more complex that one single query, then, Gatling is definitively a tool you should consider.
cheers
Nicolas