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Date: Wed, 4 Mar 2009 14:07:07 +0100
Message-ID: <bf119e410903040507k2d6e7e88ib04583632b07d74c@mail.gmail.com>
To: mike <mike503@gmail.com>
Cc: PHP Developers Mailing List <internals@lists.php.net>
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Subject: Re: [PHP-DEV] How expensive are function_exists() calls?
From: kureal@kkooporation.de (Kenan Sulayman)

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Hello Mike!

Depending on how you'd define expensive, it may variate.
Normally, on websites function_exists(x) ain't expensive.

Altrought function_exists needed 0.000077009201049805 seconds to execute.
Do you think, that's pretty expensive ?

Your,
--
(c) Kenan Sulayman
Freelance Designer and Programmer

Life's Live Poetry


2009/3/4 mike <mike503@gmail.com>

> I am trying to figure out a strategy for multiple output formats on a
> site, and it seems like I can have functions defined by default, but
> have them defined -after- I've included the targetted format first.
>
> However that would require
>
> file1.php:
>
> function foo() {}
>
> file2.php
>
> if(!function_exists('foo')) {
>   function foo() {}
> }
>
> Is this a very expensive thing to do? There would be a good number of
> functions that would be leveraging this. Is it a no-no? or is it
> pretty cheap?
>
> Thanks
> - mike
>
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