Closing the users browser connection whilst keeping your php script running has been an issue since 4.1, when the behaviour of register_shutdown_function() was modified so that it would not automatically close the users connection.

sts at mail dot xubion dot hu
Posted the original solution:

<?php
header("Connection: close");
ob_start();
phpinfo();
$size=ob_get_length();
header("Content-Length: $size");
ob_end_flush();
flush();
sleep(13);
error_log("do something in the background");
?>

Which works fine until you substitute phpinfo() for
echo ('text I want user to see'); in which case the headers are never sent!

The solution is to explicitly turn off output buffering and clear the buffer prior to sending your header information.

example:

<?php
ob_end_clean();
header("Connection: close");
ignore_user_abort(); // optional
ob_start();
echo ('Text the user will see');
$size = ob_get_length();
header("Content-Length: $size");
ob_end_flush(); // Strange behaviour, will not work
flush(); // Unless both are called !
// Do processing here
sleep(30);
echo('Text user will never see');
?>

Just spent 3 hours trying to figure this one out, hope it helps someone

<!-- put this at the top of the page -->
<?php
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$starttime = $mtime;
?>

<!-- put other code and html in here -->


<!-- put this code at the bottom of the page -->
<?php
$mtime = microtime();
$mtime = explode(" ",$mtime);
$mtime = $mtime[1] + $mtime[0];
$endtime = $mtime;
$totaltime = ($endtime - $starttime);
echo "This page was created in ".$totaltime." seconds";
>

//$pagination = pagelink("viewlist", $pageno, $bloglimit, $numrow);
$pagination = pagelink("view",$pageno, $bloglimit, $numrow); // change to this

if ($right_menu){
if (isset($mode)) {
switch ($mode) {
case "viewid":
include 'view.php';
$search = false ;
break;
case "viewdate" :
include 'viewmode.php';
break;
case "viewmonth":
include 'viewmode.php';
break;
case "delcom":
include 'delcomment.php';
$search = false ;
break;
case "editcom":
include 'view.php';
$search = false ;
break;
case "viewcat":
include 'viewmode.php';
break;
case "search":
include 'search.php';
break;
case "viewuser":
include 'viewuser.php';
break;
case "view": //add this
unset($mode); //add this
break; // add this
default: include($mybloggie_root_path.'blog.php'); break;
}
}

......

if ($right_menu){
if (isset($mode)) {
switch ($mode) {
case "viewid":
include 'view.php';
$search = false ;
break;
case "viewdate" :
include 'viewmode.php';
break;
case "viewmonth":
include 'viewmode.php';
break;
case "delcom":
include 'delcomment.php';
$search = false ;
break;
case "editcom":
include 'view.php';
$search = false ;
break;
case "viewcat":
include 'viewmode.php';
break;
case "search":
include 'search.php';
break;
case "viewuser":
include 'viewuser.php';
break;
case "view": //add this
unset($mode); // add this
break; //add this
}

int main(int argc, char *argv[])
{
NSWindow *mainwin;
MainView *mainview;
NSRect scr_frame;
unsigned int style_mask;

NSAutoreleasePool *pool =[[NSAutoreleasePool alloc] init];

[NSApplication sharedApplication];

scr_frame=[[NSScreen mainScreen] visibleFrame];
style_mask=NSClosableWindowMask|NSMiniaturizableWi ndowMask|
NSResizableWindowMask|NSTitledWindowMask;
#ifdef GNUSTEP
scr_frame=[NSWindow frameRectForScreenRect:scr_frame styleMask:style_mask];
#endif
scr_frame=[NSWindow contentRectForFrameRect:scr_frame
styleMask:style_mask];

mainwin=[[NSWindow alloc]
initWithContentRect:scr_frame
styleMask:style_mask
backing:NSBackingStoreBuffered
defer:NO];
[mainwin makeKeyAndOrderFront:nil];
[mainwin setTitle:@"Visible screen window"];

mainview=[[MainView alloc] initWithFrame:scr_frame];
[mainwin setContentView:mainview];

[mainwin setReleasedWhenClosed:YES];

[pool release];
[NSApp run];
return 0;
}