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The php documentation suggests that I should end each ob_start() with an ob_end_flush(). I am using one on each page of a site, just to allow me to use firephp log methods anywhere in the app.
the app works fine, but I wonder if there is anything I don’t know that might be detrimental.
I think the reason for this suggestion is, that PHP flushes your output buffer implicitly when not using one of the
ob_end_*functions. While not an error, this can cause problems when not expecting it. The PHP-docs try to protect you from these kind of problems. If you are aware of the implicit flush, it is probably not an issue.