ob_end_flush
Use an '@' sign as "@ob_flush();" to avoid the following message:
Notice: ob_flush(): failed to flush buffer. No buffer to flush. in /etc/www/test.php on line 88
ob_flush
(PHP 4 >= 4.2.0, PHP 5)
ob_flush — Flush (send) the output buffer
Description
void ob_flush
( void
)
This function will send the contents of the output buffer (if any). If you want to further process the buffer's contents you have to call ob_get_contents() before ob_flush() as the buffer contents are discarded after ob_flush() is called.
This function does not destroy the output buffer like ob_end_flush() does.
Return Values
No value is returned.
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User Contributed Notesob_flush
solidli at gmail dot com
23-May-2007 10:28
23-May-2007 10:28
21-Sep-2005 07:37
I was having problems with output buffering which seemed to be active by default on the server, although phpinfo said something else..
In any case I needed to know that when I ran ob_start, it would start at the top level, so I could use ob_flush as it's intended without having to call multiple ob_flush in-script - this is what I did:
<?php
// make sure output buffering is off before we start it
// this will ensure same effect whether or not ob is enabled already
while (ob_get_level()) {
ob_end_flush();
}
// start output buffering
if (ob_get_length() === false) {
ob_start();
}
?>
Then I could call ob_flush(); followed by flush(); and get the output I wanted, which I didn't if I started the script with just ob_start();
This was on a windows apache 2 server with php 5.0.4 btw.
24-Jun-2005 07:27
You must call them in the correct order.
ob_flush();
flush();
Reynard Hilman
22-Jun-2005 03:29
22-Jun-2005 03:29
when using command line php, if somewhere in your script you have ob_start(), you have to call ob_end_flush() first, and then you can call these functions:
flush();
ob_flush();
without calling ob_end_flush first, flush and ob_flush does not have any effect, at least that's what I experienced.
jeremy at e2-media dot co dot nz
25-May-2005 05:09
25-May-2005 05:09
we had problems with flushing data to the browser. a simple call to ob_flush() or flush() would not work. We found that repeatly calling theses fuctions did work however.
<?
flush();
ob_flush();
flush();
ob_flush();
flush();
ob_flush();
?>
go figure!
14-Jan-2003 09:23
As far as I can tell the only way to mimic ob_flush()'s behaviour on PHP < 4.2.0 is calling ob_end_flush() followed by ob_start().