List of JSON RPC client libraries in PHP available on GitHub.

https://github.com/fguillot/JsonRPC

- no transport injection (curl)
- no json options (json_encode, json_decode)
- no read timeout (no interface)
- returns raw result from `result` key and `null` on error
- id = mt_rand() (no way to set custom)

https://github.com/EvilScott/junior

- no transport injection (file_get_contents)
- no json options (json_encode, json_decode)
- no any timeout options
- response object with public props
- utf8_decode (wtf)
- id = uniqid() (no way to set custom)

https://github.com/soundasleep/jsonrpcclient/

- no transport injection (fopen)
- no json options (json_encode, json_decode)
- no any timeout options
- returns raw result from `result` key and throws exception on error
- id = ++ (no way to set custom)

https://github.com/marcelklehr/tivoka/

- no transport injection (file_get_contents for http, fsockopen for tcp and websocket)
- no json options (json_encode, json_decode)
- no read timeout
- public props
- id = uuid (no way to set custom)

https://github.com/sergeyfast/

- no transport injection (curl)
- no json options (json_encode, json_decode)
- no read timeout (no interface)
- id = ++ (no way to set custom)
- bad design at all

https://github.com/subutux/json-rpc2php

- too simple, no options, common problems as for others

https://github.com/johnstevenson/jsonrpc/

- transport injection! but no interface for it
- no json options (json_encode, json_decode)
- client contains response, doesn't return it
- id = ++ (no way to set custom)

https://github.com/Pozo/json-rpc-php/

- no transport injection (curl)
- no json options (json_encode, json_decode)
- no any timeout
- returns raw result as `stdObject`
- native interface (without alternative)
- id = ++ (no way to set custom)


What's the perfect JSON RPC client library

- separate implementation for JSON RPC objects and communication
- transport injection (interface) with out-of-the-box implementation for popular clients like Guzzle
- json options for `json_encode`, `json_decode`
- timeouts: connect, write, read
- uses objects for request and response, no public props — public getters
- request with custom id (id should be controlled by a request manager, not request itself)
- promises as results on batch request