[wp-hackers] Replace default doctype on one page only through
mikeschinkel at newclarity.net
Mon Jan 19 08:39:53 GMT 2009
Gaarai <gaarai at gaarai.com> wrote:
> The problem is that the ob_start function does not nest. There is no
> way to guarantee that nothing else will call ob_start between the
> start_output_collection() and send_output() functions. On a standard
> install with the default theme, there are a total of 45 apply_filters
> calls as well as requiring the theme's header.php code. At any point
> in executing an of these sections of code, some code may exist that
> makes use of ob_start.
I'm confused. According to PHP.NET:
Output buffers are stackable, that is, you may call ob_start()
while another ob_start() is active. Just make sure that you call
ob_end_flush() the appropriate number of times. If multiple output
callback functions are active, output is being filtered sequentially
through each of them in nesting order.
And this explicitly says you can nest calls. Obviously, I'm missing something as your statement and PHP.NET seem to contradict. I'm sure it's my misunderstanding; I've been coding for 20 years but only PHP for two and only recently on a hard-core basis so I haven't learned all it's ins-and-outs of PHP. So I'm hoping you can help me better understand this apparent dichotomy.
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