note 113406 added to function.ob-get-clean

Keep in mind that output may be buffered by default, depending on how you are running PHP (CGI, CLI, etc.). You can use ob_get_level() to determine if an output buffer has already been started. On most web servers I've used, output buffering is already one level deep before my scripts start running. You should only end as many output buffers as you start. Assuming that your buffer is always the first buffer, or otherwise closing pre-existing buffers, could lead to problems. In PHP 5.5, you can ensure that output buffers are ended properly using a try-finally block. Something like this is almost guaranteed to break stuff: <?php // Don't ever do this! while (ob_get_level() > 1) { ob_end_flush(); } $content = ob_get_clean(); ?> The problem is that number, "1". Using a fixed number there is asking for trouble. Instead, use ob_get_level() to get the number of output buffers applied when your code starts, and return to that number, if you really must use an unknown number of output buffers: <?php ob_start(); $saved_ob_level = ob_get_level(); // Do stuff here: run_something(); // If you really must close all of your output buffers except one, this'll do it: while (ob_get_level() > $start_ob_level) { ob_end_flush(); } // And now, the final output buffer that belongs to us: $content = ob_get_clean(); ?> ---- Server IP: 69.147.83.199 Probable Submitter: 70.215.10.48 ---- Manual Page -- http://php.net/manual/en/function.ob-get-clean.php Edit -- https://master.php.net/note/edit/113406 Del: integrated -- https://master.php.net/note/delete/113406/integrated Del: useless -- https://master.php.net/note/delete/113406/useless Del: bad code -- https://master.php.net/note/delete/113406/bad+code Del: spam -- https://master.php.net/note/delete/113406/spam Del: non-english -- https://master.php.net/note/delete/113406/non-english Del: in docs -- https://master.php.net/note/delete/113406/in+docs Del: other reasons-- https://master.php.net/note/delete/113406 Reject -- https://master.php.net/note/reject/113406 Search -- https://master.php.net/manage/user-notes.php