[nflug] PHP (switch vs. nested if)

[Mark Musone]

The cleanest would be for your arrays to be a single array of arrays..

 

For example:

$myarray={1,2,3,4,5};

$myotherarray={5,6,7,8,9};

 

Would be a pain, but

 

$arrays[0]={ 1,2,3,4,5};

$arrays[1]={5,6,7,8,9};

 

 

Then you simply have a single assignment:

 

$myarraytouse=$array[$num];

 

 

Mark

 

From: nflug-bounces at nflug.org [mailto:nflug-bounces at nflug.org] On Behalf Of
Rob Dege
Sent: Thursday, February 21, 2008 2:57 PM
To: nflug at nflug.org
Subject: Re: [nflug] PHP (switch vs. nested if)

 


I'm not took concerned about readability.  I already code in the style of
spaghetti, so cleanliness is not my first concern.  I think I might break
the switch into chunks of 20, and then use a single if statement to
determine which switch to compare the variable against.

Thanks for the replies though.

Bob, I know not of this 'C' you language speak of... unless you forgot to
add the '#' after it ;)

-Rob

On Thu, Feb 21, 2008 at 1:11 PM, Robert Meyer <meyer_rm at yahoo.com> wrote:

Well, if you write the code in C, just create an array of addresses of
arrays and just directly access the array by position.  Then you don't even
need any comparisons. :-)

Cheers!

Bob

 

--
"When once you have tasted flight, you will forever walk the earth with your
eyes turned skyward, for there you have been, and there you will always long
to return."
--Leonardo da Vinci

 

----- Original Message ----
From: Franklin Kumro Jr <fkumro at gmail.com>
To: nflug at nflug.org
Sent: Thursday, February 21, 2008 12:18:07 PM
Subject: Re: [nflug] PHP (switch vs. nested if)

I would agree that a switch statement would be the preferred method.  
Multiple nested if statements hurt code readability, let alone a 1-80  
range.

-Frank
On Feb 21, 2008, at 11:43 AM, Timothy Finucane wrote:

> A switch is the most efficient method. I'm not sure how much speed  
> performance is affected, but nested ifs would make the code  
> difficult to read.
>
> -- 
> Timothy J. Finucane
>
> http://www.speljamr.com
>
> Facebook: http://www.facebook.com/p/Timothy_J_Finucane/682422189
>
>
>
> On 2/21/08, Rob Dege <livemotion at gmail.com> wrote:
> Hi, I'm wondering which would provide faster processing time based  
> on the web page I'm building.
>
> I have a variable, let's call it $num.  $num is an int that can be  
> anywhere from 1 to 80.  Based on $num's value, an array is assigned  
> that is then used on the web page.  Since this is for a web page, I  
> want to minimize the wait time as much as possible, and I'm guessing  
> that this could be a potential bottleneck.  I have not written the  
> code yet, so I can't compare load times.  I'm considering this more  
> of a "do it the preferred way the first time".
>
> So I'm curious as to which would be faster, a simple switch with 80  
> possible cases, or a "nested if" that uses a sorting algorithm;  or  
> perhaps even more plausible, a combination of the two.
>
> Any random thoughts are appreciated :)
>
> -- 
> -Rob
>
> Ben Franklin Quote: "They that can give up essential liberty to  
> obtain a little temporary safety deserve neither liberty nor safety."
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-- 
-Rob

Ben Franklin Quote: "They that can give up essential liberty to obtain a
little temporary safety deserve neither liberty nor safety." 

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