Processing Request notice

mwienick

wonderining how to put a message up on a webpage that says processing reuest while a long query is going through
thanks

Frederick

There is one way I have done this because if you use a header() function, you will get an error.

I setup a response page to let a person know the process is completed.

Then in the processing page, I will place at the beginning of the code, "Processing, Please wait...."

Instead of using the header() function, use a refresh redirect. Redirect is the only thing you can use if you render any HTML before the process code.

echo "<META HTTP-EQUIV='refresh' CONTENT='0; URL=index.php'>";

Shrike

To elaborate a little, you will need to use output buffering to send content step by step to the browser (as happens in the vBulletin posting message). The trick below won't work on most Windows platforms, and Frederick is right in saying that you can't send any header() calls after you have output some content. I couldn't get the following not to cache in IE6, so some further tinkering with headers would be needed.

// Try to ensure the page isn't browser cached
header("Expires: Mon, 26 Jul 1997 05:00:00 GMT");
header("Cache-Control: no-store, no-cache, must-revalidate");
header("Cache-Control: post-check=0, pre-check=0", false);
header("Pragma: no-cache");
// Overcomes the IE 256 bytes problem
ob_end_clean();
print "Processing.";
flush();
sleep(1);
print ".";
flush();
sleep(1);
print ".";
flush();
sleep(1);
print("<br>Redirecting now...");
sleep(1);
// Do the redirect
print("<META HTTP-EQUIV='refresh' CONTENT='0; URL=http://www.php.net'>");
exit;

Example.

Roger_Ramjet

Shrike, try adding this to your headers to beat IE6 cache

// always modified
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");