Fix#3739. User is seeing an intermittent notice when running samples using a web browser. The notice is comming from ob_clean, complaining that there is no buffer to delete. I frankly do not understand what the ob_clean is supposed to be paired with, nor why I cannot duplicate this result. Possibly, a better solution would be to eliminate the ob_clean; but using ob_get_length beforehand to see if there is anything to clean up seems safer, and I can't think of a downside.
The code in question is never executed when a sample is run from the command line. Consequently, no formal unit test is possible. The user reporting the problem was asked to test the change, and confirmed that the problem went away; no new problem arose on my system.
This introduce a helper class that should be used to log things,
avoiding a lot of boilerplate code.
Also all output are made in /tmp folder instead of beside the script
itself. This is because there is a high chance that the folder containing
the script is not writtable by webserver. So using the /tmp folder
makes it more likely to works in a variety of setup.
oleibman
oleibman
Adrien Crivelli