Description:
------------
The connection_aborted() doesn't work under CGI. I discovered
this bug when I was coding a current download count script.

The "ISAPI/Apache Modules" work fine with this function.

Reproduce code:
---------------
I used the following code to output some text in a slow maner,
than I stopped it to see if the file is written.

The file is written under the ISAPI/Apache Modules, but it
isn't written when using CGI. Why is that?

<?php
ignore_user_abort(1);

// Type a message to animate on the person's browser.

$string = "This dummy text will be shown every second untill it's finished. You should<br>
close the browser while it's typing on your screen and check message.txt";
      
$output = str_split($string, 1);

for ($n=0; $n < count($output); $n++) {

    set_time_limit(0);
    
    flush();
    ob_end_flush();
    sleep(1);
    
    echo $output[$n];

    if (connection_aborted()) {
        
        $fp = fopen("message.txt", "w");
        fwrite($fp, "Download Aborted! No!!!!!");
        fclose($fp);
        exit;
    }
}
?>



Expected result:
----------------
IF the condition of connection_aborted() is TRUE, it should
write message.txt with some text in it.

Actual result:
--------------
Nothing is written!