How to use the variable inside some function?

Question

I have an API's Function :

$transaction=$tran[4];
function coinpayments_api_call($cmd, $req = array(),$transaction) { 
curl_init($transaction);
}

$transaction variable not passing into function coinpayments_api_call.

function not taking values from out side.

I also make $transaction varible GLOBAL ,but still same problem ,

Please Help

Answer 1

Make your code like this

$transaction=$tran[4];
function coinpayments_api_call($transaction,$cmd, $req = array(),$txnid) { 
curl_init($transaction);
}