One thing to consider is changing json_encode to add a header
Content-type: application/json (or x-javascript), unless the additional
arguments are used..
That way someone using the function to intermingle with HTML will be
faced with the fact they have to encode the output, otherwise it breaks
the page...
ob_iconv_handler() does something similar to this and I consider it a
mistake as:
ob_start('ob_iconv_handler');
echo "Foo";
ob_flush();
echo "Bar";
Will result in a headers already sent message, even though no explicit
attempt is made to send headers.
I've been meaning to come up with a BC fix for this... In time for 5.3
at least...
-Sara
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