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 PHP is installed as a module. On other servers it will result in 500, since they will be invalid directives
Not sure, but i think the error is caused by the first line.
Use php_flag for On/Off True/False switches, like this:
php_flag output_buffering On
来源：https://stackoverflow.com/questions/4642097/php-htaccess-output-buffering