output-buffering

Having a few problems with output buffering. Mainly, I'm trying to run output buffering with the ob_gzhandler callback, but it keeps telling me its using an unsupported compression type. Everything is enabled, and I believe the problem is that running ob_get_level() at the start of my script produces a level of 1. php.ini has my output_buffering set to 4096. If I run something like: while(ob_get_level() > 0){ ob_end_clean(); } Then I can successfully run ob_start() with the ob_gzhandler callback. But I'm wondering if it should be a problem. During my script I make calls to ob_clean() at

I have the following code in an htaccess file in my application root to turn output buffering on. php_value output_buffering On php_value output_handler mb_output_handler On some servers it causes a 500 internal error, on others it works fine. Does anyone know why it sometimes causes an error. Is there a different way to do this? Thank you! You can use this syntax only if PHP is running as an Apache module. The 500 errors probably come up on servers where this is not the case. For total certainty, look into the server's error.log file for a detailed error message. Those directives work only if

Can anyone explain why I am receiving the following error? In the code, if the echo $gz; is commented out I receive no error (but also no output!), if it isn't I get (from Firefox), Content Encoding Error The page you are trying to view cannot be shown because it uses an invalid or unsupported form of compression. Thanks for your help, here's the code: ob_start('ob_gzhandler') OR ob_start(); echo 'eh?'; $gz = ob_get_clean(); echo $gz; The output of your application should only contain one output encoding. If you have multiple chunks that are encoded differently, then the browser will get a

So I'm writing a disposable script for my own personal single use and I want to be able see how the process is going. Basically I'm processing a couple of thousand media releases and sending them to our new CMS. So I don't hammer the CMS, I'm making the script sleep for a couple of seconds after every 5 requests. I would like - as the script is executing - to be able to see my echo s telling me the script is going to sleep or that the last transaction with the webservice was successful. Is this possible in PHP? Thanks for your help! Iain Use ob_flush to send any data in the buffer. So you can

Just want to pick the experts' brains on php output buffering. There are times when I've wanted to implement it for one reason or another, but have always managed to rearrange my code to get around it. I avoid using it because it sounds like it'll cost resources. I mean, if they can offer the coder such wonderful flexibility, why don't they always buffer output? The only answer I can come up with is: because not buffering it saves tremendous resources, and with good coding practice you shouldn't need it. Am I way off here? From my experience, there isn't a significant impact on performance. I

I see (not just on this site) a lot of question from inexperienced PHP programmers about the infamous "headers already sent... output started at" error, and many people suggest using ouput buffering as a solution. In my experience I have never found a situation where that error wasn't caused by a flaw in the program's logic. Are there cases where output buffering is actually the correct solution? I would concur with your initial statement. Generally, solving "headers" problem with output buffering is a stopgap measure. The really sad/funny part of this solution is: what happens when you want

Is there a simple way to detect in PHP if output_buffering is ON in php.ini? I'd like to be able to display a message if it is not turned on. Within my application I tried using an htaccess file to automatically turn it on but it seems it does not work in all server environments and in some cases it gives a nasty error. Thank you very much! You can check any INI setting in PHP with the ini_get method. http://php.net/ini_get ini_get('output_buffering'); Likewise, you can change most INI settings with ini_set : ini_set('output_buffering', 'on'); You can access the output_buffering value in the

I have a PHP script which sends a large number of records, and I want to flush each record as soon as it is available: the client is able to process each record as it arrives, it does not need to wait for the entire response. I realize it takes slightly longer for the entire transfer because it needs to be sent in multiple packets, but it still allows the client to start working sooner. I've tried all the different flush() and ob_flush() functions but nothing seems to help get the data actually sent over the line before the page is finished. I've confirmed that it is not the web browser