问发送http响应后继续处理php

EN

ignore_user_abort(true);//not required
set_time_limit(0);

ob_start();
// do initial processing here
echo $response; // send the response
header('Connection: close');
header('Content-Length: '.ob_get_length());
ob_end_flush();
@ob_flush();
flush();
fastcgi_finish_request();//required for PHP-FPM (PHP > 5.3.3)

// now the request is sent to the browser, but the script is still running
// so, you can continue...

die(); //a must especially if set_time_limit=0 is used and the task ends

// Buffer all upcoming output...
ob_start();

// Send your response.
echo "Here be response";

// Get the size of the output.
$size = ob_get_length();

// Disable compression (in case content length is compressed).
header("Content-Encoding: none");

// Set the content length of the response.
header("Content-Length: {$size}");

// Close the connection.
header("Connection: close");

// Flush all output.
ob_end_flush();
@ob_flush();
flush();

// Close current session (if it exists).
if(session_id()) session_write_close();

// Start your background work here.
...

session_write_close(); //close the session
ignore_user_abort(true); //Prevent echo, print, and flush from killing the script
fastcgi_finish_request(); //this returns 200 to the user, and processing continues

// do desired processing ...
$expensiveCalulation = 1+1;
error_log($expensiveCalculation);