PHP中的异步函数调用

Question

I am working on an a PHP web application and i need to perform some network operations in the request like fetching someone from remote server based on user's request.

Is it possible to simulate asynchronous behavior in PHP given that i have to pass some data to a function and also need output from it.

My code is like:

<?php

     $data1 = processGETandPOST();
     $data2 = processGETandPOST();
     $data3 = processGETandPOST();

     $response1 = makeNetworkCall($data1);
     $response2 = makeNetworkCall($data2);
     $response3 = makeNetworkCall($data3);

     processNetworkResponse($response1);
     processNetworkResponse($response2);
     processNetworkResponse($response3);

     /*HTML and OTHER UI STUFF HERE*/

     exit;
?>

Each network operation takes around 5 seconds to complete adding a total of 15 seconds to the response time of my application given i make 3 requests.

The makeNetworkCall() function just do a HTTP POST request.

The remote server is an 3rd party API so i don't have any control over there.

PS: Please do not answer giving suggestions about AJAX or Other things. I am currently looking if i can do this through PHP may be with an C++ extension or something like that.

Answer 1

cURL is going to be your only real choice here (either that, or using non-blocking sockets and some custom logic).

This link should send you in the right direction. There is no asynchronous processing in PHP, but if you're trying to make multiple simultaneous web requests, cURL multi will take care of that for you.