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// Different browsers like different standards...
[...]
elseif (isBrowser('opera'))
header('Content-Disposition: ' . $disposition . '; filename="' . preg_replace_callback('~&#(\d{3,8});~', 'fixchar__callback', $real_filename) . '"');
I wonder if this is still relevant now that Opera uses WebKit (is it webkit?).
Yeah, TBH it should act like the JS does, calls it opera for opera <= 12 and chrome otherwise. The php side will id it as Opera vs Chrome but thats not good for the css tags unless someone wants to add #opera in a few spots as well.