NYCPHP Meetup

[Ben Sgro]

Hello,

How do you know the switch statement is your performance bottleneck? Did 
you profile the application?
Care to share the code?

- Ben

Donald J. Organ IV wrote:
> If I remember correctly, if/else if/else statements are faster than 
> Switch-Case.
>
> I would suggest converting them and see if you get a performance increase.
>
> ----- Original Message -----
> From: "Eddie Drapkin" <oorza2k5 at gmail.com>
> To: "NYPHP Talk" <talk at lists.nyphp.org>
> Sent: Thursday, May 14, 2009 2:12:15 PM GMT -05:00 US/Canada Eastern
> Subject: [nycphp-talk] Switch-Case v. if/else
>
> Does anyone know how the PHP Interpreter pulls switch/case statements 
> together?  Does it emulate a C compiler and, for larger case sets, 
> build a huge if/else cascade? Does it do this always?  Is there any 
> way to know when it builds a jump table (like a s/c is supposed to)?  
> I've got a slow script (it's eating ~85% of execution time) that I 
> can't work around and one of the slower parts is a switch case (which 
> is slightly faster than manually building an if/else cascade) and was 
> wondering if anyone had any performance tips for cases like these.
>
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