[xdebug-general] Re: how to enable xdebug profiling under certain condition?

On Tue, 13 Jan 2009, Shaojie Liu wrote:

> as far as i'm concered, it seems like that the only place where to
> switch on/off the 'profiling' function is the variable of
> debug.profiler_enable="0" in the ini file.
>
> while i'm thinking of how to utilize xdebug to make a live site
> profiling, i'm stuck on the I/O performance associated with xdebug.
> that is, if we turn on profiling on a web server, the sys load will
> soon drive the server into mad.
>
> however, i indeed believe IF we can:
> 1) only do profiling on a certain url (i.e, login.php?xxx)
> or
> 2) only do profiling on a certain remote_ip;
>
> then, we will be able to gather really really helpful data without
> bring too much noise to server/users, and life is gorgeous.
>
> i read thru. the doc and mail-list with empty hand. so, how can i make
> this happen? or any further suggestion?

1. Set the php.ini setting xdebug.profiler_enable_trigger to 1
2. Use either a cookie, get or post variable with the name
   "XDEBUG_PROFILE" and a random value. Then for that request there will
   be a profile file generated.

This is in the docs
at: http://xdebug.org/docs/profiler#profiler_enable_trigger

regards,
Derick

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