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php4-beta | 200004

Re: [PHP4BETA] A (Hopefully) simple question *gulp* From: David Robley (huntsman <email protected>)
Date: 04/27/00

On 27 Apr, John Steele wrote:
> David,
>
>>Yup. Initialise a counter then increment it for each table row you
>>display. Then, on each row, test the counter value mod 2. If the result
>>is zero, use one colour for row background, otherwise use the other
>>colour.
>
> Here's another simple way to let the colors do the work. It can be made into a pretty sick one-liner :)
>
> <?
> $color1 = "#ffffff";
> $color2 = "#E1DAC1";
> ?>
> <TABLE BORDER=0 CELLSPACING=1 CELLPADDING=1>
> <TR>
> <TH>Blah</TH><TH>Blah2</TH>
> </TR>
> <?
> $color = "";
> for ($i=0;$i < $num; $i++) {
> $color = ($color == $color1) ? $color2 : $color1;
> echo "<tr bgcolor=\"$color\"><td>yada</td><td>spew</td></tr>
> // more stuff
> }
> ?>
> </table>

Neat - it cuts out the 'increment the counter' phase and saves a line or
two of code :-).

Just out of sheer curiosity, I wonder which would be more CPU-effective;
doing the counter increment and a modulus/numeric comparison in the
ternary; or the string comparison in the ternary. I know it's academic
in respect of the computing power we have these days, but being brought
up on machines with limited memory and slow processors.... Old habits
die hard.

Cheers 

-- 
David Robley                        | WEBMASTER & Mail List Admin
RESEARCH CENTRE FOR INJURY STUDIES  | http://www.nisu.flinders.edu.au/
AusEinet                            | http://auseinet.flinders.edu.au/
            Flinders University, ADELAIDE, SOUTH AUSTRALIA

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