guzzle/guzzle — pull request #515 by goetas (2014-01-03 09:43:04+00:00)
Title: Persing query parameters starting with '&'

Url `/foo?&a=1`

should be equivalent to `/foo?a=1`, not `/foo?=&a=1`.

The current implementation explodes sting using `&`, i've added just a check that looks if key is empty