php.ini:
output_buffering = Off

IIS:
disable ouput buffering

the program:
<?php
ignore_user_abort(false);
echo str_repeat("start",300);
sleep(10);
$f=@fopen("test.txt","w") or die("problems");
?>

After about 3 seconds, I aborted the program execution, but the program wasn't finished, it created the file test.txt. I also tested with Windows 2000 Profesional, and the result was the same.

My question: ignore_user_abort() doesn't work on Windows? When I call phpinfo(), it shows the configuration variable ignore_user_abort with the value Off. But in the file php.ini I don't find it anywhere. Why?

------------------------------------------------
other problem: memory_limit (Windows 2000 Server)
-------------------------------
The documentation writes(Getting started/configuration/configuration directives) that the option memory_limit can be changed everywhere (PHP_INI_ALL). I observe the following problems:

1. The memory_limit isn't displayed when the script displays the conf. options with phpinfo()

2. The ini_get("memory_limit") function  doesn't return the value of memory_limit, too (it returns a blank space)

3. when I set in the php.ini memory_limit to ) 0, the get_cfg_var("memory_limit") returns the value of 0. When I set ini_set("memory_limit","0")(both of them should mean that the script has no memory space), but the script runs without problems

Please, confirm if the enumerated observations are a bug, or the problems persist because of Windows 2000 Server. I read very carefuly the documentation for PHP 4.3. Does it mean that the memory_limit can be changed inside a script ? Why is written that this option is changeable by PHP_INI_ALL ????