#21895 [Fbk->NoF]: implicit_flush and flush() not working proplerly with CLI SAPI

ID: 21895 Updated by: sniper@php.net Reported By: haawk at acknet dot org -Status: Feedback +Status: No Feedback Bug Type: Output Control Operating System: FreeBSD 4.7 PHP Version: 4.3.0 Assigned To: helly New Comment: No feedback was provided. The bug is being suspended because we assume that you are no longer experiencing the problem. If this is not the case and you are able to provide the information that was requested earlier, please do so and change the status of the bug back to "Open". Thank you. Previous Comments: ------------------------------------------------------------------------ [2003-04-26 09:55:11] helly@php.net Please try using this CVS snapshot: http://snaps.php.net/php4-STABLE-latest.tar.gz For Windows: http://snaps.php.net/win32/php4-win32-STABLE-latest.zip ------------------------------------------------------------------------ [2003-02-06 06:02:49] mgf@php.net Oops -- my bad -- didn't read enough of the report properly. I see I seem to have explained what you already know. Sorry! ------------------------------------------------------------------------ [2003-02-06 05:58:31] mgf@php.net Thank you for taking the time to write to us, but this is not a bug. Please double-check the documentation available at http://www.php.net/manual/ and the instructions on how to report a bug at http://bugs.php.net/how-to-report.php That script is working exactly as expected, and the call to ob_flush() is exactly the expected solution. implicit_flush has no relation to ob_flush(), or output buffers in general. There are indeed two layers of output buffering, but, slightly confusingly, only one of them is called "output buffering" -- this is the layer handled by the ob_*() functions. If output buffering is on, it works like this: output goes to (script's) output buffer (ob). ob_flush() sends it to PHP's "connection" buffer. flush() (or implicit_flush) sends connection buffer to browser. If you want to use flush() or implicit_flush to send output to the browser as it's produced, you'd be much better to turn output buffering off. (You could also take a look at ob_implicit_flush() (http://www.php.net/manual/en/function.ob-implicit-flush.php), but it seems to me this would be rather inefficient.) ------------------------------------------------------------------------ [2003-02-05 18:21:27] sthomas at townnews dot com I think the key is this: implicit_flush => On => Off Is there a double internal pointer to this setting or something? No amount of setting implicit_flush will make both of them true. This script does not output as you'd expect: <?PHP ob_implicit_flush(1); while (TRUE) { echo ".\n"; sleep(1); } ?> This should output a period every second on the CLI, but does not. Even putting a call to flush() in the while loop does nothing. I was able to get this to work by using ob_flush() oddly enough. So essentially, flushing is completely broken unless you use ob_flush. ------------------------------------------------------------------------ [2003-01-27 01:12:59] haawk at acknet dot org Basically it just seems to not be working at all on my system...however when initiating "php -i" I get: implicit_flush => On => Off my configure line was: ./configure --with-mysql --enable-ftp --with-apxs=/usr/local/apache/bin/apxs Here is the script, which doesn't output ANYTHING until the script ends...it is then all flushed out at once...the warning messages come out as the script executes, but not the echo's or print()'s <?php print("weee"); $ftp_server = 'host'; $ftp_user_name = 'user'; $ftp_user_pass = 'pass'; $localprefix = '/usr/home/blah/'; $remoteprefix = '/usr/home/blah/'; $subdirs = array('lib','HELP','ONJOINS','HELP/CHANSERV','HELP/NICKSERV'); foreach ($subdirs as $dir) { mkdir($localprefix . $dir); print("mkdir $localprefix . $dir\n"); } // set up basic connection $conn_id = ftp_connect($ftp_server); // login with username and password $login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass); // check connection if ((!$conn_id) || (!$login_result)) { echo "FTP connection has failed!\n"; echo "Attempted to connect to $ftp_server for user $ftp_user_name\n"; exit; } else { echo "Connected to $ftp_server, for user $ftp_user_name\n"; } // get the files foreach ($subdirs as $dir) { ftp_chdir($conn_id, "$remoteprefix$dir"); print("$remoteprefix$dir"); $curdir = ftp_pwd($conn_id); foreach (ftp_nlist ($conn_id, $curdir) as $file) { $download = ftp_get($conn_id, $localprefix . $dir . '/' . $file, $file, FTP_ASCII); // check upload status if (!$download) { echo "FTP upload has failed for $dir/$file!\n"; } else { echo "Downloaded $dir/$file successfully\n"; } } } // close the FTP stream ftp_close($conn_id); ?> ------------------------------------------------------------------------ -- Edit this bug report at http://bugs.php.net/?id=21895&edit=1