PHP - while loop loading - php

Question

I have a while loop, that takes ip's and passwords from a text file and logins to some servers that I rent using HTTP Auth.
<?php
$username = 'admin';
function login($server, $login){
global $username, $password, $server;
$options = array(
CURLOPT_URL => $server,
CURLOPT_HEADER => 1,
CURLOPT_RETURNTRANSFER => 1,
CURLOPT_USERAGENT => "Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.2) Gecko/20090729 Firefox/3.5.2 GTB5",
CURLOPT_HTTPHEADER => array("
Host: {$server}
User-Agent: Mozilla/5.0 (Windows NT 6.2; WOW64; rv:28.0) Gecko/20100101 Firefox/28.0
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: en-US,en;q=0.5
Accept-Encoding: gzip, deflate
Connection: keep-alive
Authorization: Basic {$login}
"));
$ch = curl_init();
curl_setopt_array($ch, $options);
$result = curl_exec($ch);
$http_status = curl_getinfo($ch, CURLINFO_HTTP_CODE);
if ( $http_status == 200 ) {
//do something
echo "Completed";
}
else { echo "Something went wrong";}
};
$file = fopen('myServers.txt', 'r');
while (! feof($file)) {
$m = explode(fgets($file), ':');
$password = $m[0];
$server = $m[1];
$login = base64_encode("{$username}:{$password}");
login($server, $login);
};
?>
The script works fine. However, when I load the page on my localhost, it takes forever to load and then prints out everything at once when its done with the entire file.
I want to print out Something went wrong or completed each time it does the file, I don't want it to wait for the entire file to go through the loop.

Answer 1

You're probably going to want to take a look at PHP flushing, which pushes content to the browser before continuing on with creating more page content. Note that from what I remember of PHP, you need to ob_flush() and flush() at the same time in order to properly flush content to the browser.
http://us3.php.net/flush
[Edit]
Example: You might try changing your echo statements to something resembling the below:
echo "Completed";
ob_flush();
flush();

Answer 2

Whether you can do what you want to do depends on the web server being used, and how it's configured, with regards to output buffering.
A good place to start reading would be the documentation for PHP's flush function.
A call to flush is intended to push output to the end user - but sometimes the web server implements it's own output buffering, which defeats the effect.
From the flush documentation:
Several servers, especially on Win32, will still buffer the output from your script until it terminates before transmitting the results to the browser.