实时显示php变量

Question

I have a php code which reads a text file with email addresses and sends each email using a loop. How can I display, in real-time, the status of each email sent from within the loop? Currently, I can only write to a log file, which can only be accessed once the php code has completed execution.

Answer 1

Flush the output if you want to echo to browser.

http://php.net/manual/en/function.flush.php

Flushes the system write buffers of PHP and whatever backend PHP is using (CGI, a web server, etc). This attempts to push current output all the way to the browser with a few caveats.

<?php
  for ($i=0; $i<10;$i++){
      echo $i."<br>";
      flush();
      ob_flush();
      sleep(1);
   }