php - How can I establish connection between a client and a server where the server sends new messages to the client? -

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i need establish connection between client , server via php websocket.

the server need keeps checking external api new messages , send them client.

i understand concept can code it. have questions me wrap around head.

the client side keep making calls server via websocket every second using javascript's setinterval() function or make 1 call? how client know server have new messages?

the server side create script runs infinite loop keep checking api , echo results?

websocket how websocket know connection message belong to?

i not sure if matter going use ratchet creating websocket

on past days, solved problem via comet. , used php,node.js. should check comet technology , php , node.js.

http://www.screenr.com/snh

http://blog.jamieisaacs.com/2010/08/27/comet-with-nginx-and-jquery/

etc.


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