[zendframework/zf2#5423] Fix preg_match to work with older PCRE versions
[zendframework/zf2#5423] Fix preg_match to work with older PCRE versions

- Use `?P<...>`, not `?<...>`

asgrim/zend-http,malinink/zend-http,netroby/zend-http,zendframework/zend-http,weierophinney/zend-http,Maks3w/zend-http