The following PHP manual page (incl. user-notes) suggests multiple instructions on how to close the TCP connection to the browser without ending the PHP script:
Supposedly it requires a bit more than sending a close header.
OP then confirms: yup, this did the trick: pointing to user-note #71172 (Nov 2006) copied here:
Closing the users browser connection whilst keeping your php script running has been an issue since [PHP] 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
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(true); // just to be safe 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 :)
- IE 7.5730.11
- Mozilla Firefox 1.81