How can I change every second row?

[madsgormlarsen@gmail.com]

Hi

I am making a html table builder, and would like every second row to be
blue. So for that purpose I need a number that changes on every
iteration of a while loop, for exampel so that a value is 0 then 1 then
0 a so forth.

Any suggestions ?

Mads

[Nikola Veber]

Re: How can I change every second row?

Well, if you get the results with

while ($row = mysql_fetch_ass oc($result)){}

you could have a integer variable defined before the loop

$x = 0;
while ($row = mysql_fetch_ass oc($result)){
if ($x % 2 == 0) blue
else ...
}




madsgormlarsen@ gmail.com wrote:[color=blue]
> Hi
>
> I am making a html table builder, and would like every second row to be
> blue. So for that purpose I need a number that changes on every
> iteration of a while loop, for exampel so that a value is 0 then 1 then
> 0 a so forth.
>
> Any suggestions ?
>
> Mads
>[/color]

[madsgormlarsen@gmail.com]

Re: How can I change every second row?

Thanks a lot, I totally cool.

I had to ad $x=$x+1;

but perhaps there is another way?

[Geoff Berrow]

Re: How can I change every second row?

I noticed that Message-ID:
<1119724912.172 354.91350@g47g2 000cwa.googlegr oups.com> from
madsgormlarsen@ gmail.com contained the following:
[color=blue]
>
>I had to ad $x=$x+1;
>
>but perhaps there is another way?[/color]

$x++;

--
Geoff Berrow (put thecat out to email)
It's only Usenet, no one dies.
My opinions, not the committee's, mine.
Simple RFDs http://www.ckdog.co.uk/rfdmaker/

[Nikola Veber]

Re: How can I change every second row?

Sorry, forgot that :)

Geoff Berrow wrote:[color=blue]
> I noticed that Message-ID:
> <1119724912.172 354.91350@g47g2 000cwa.googlegr oups.com> from
> madsgormlarsen@ gmail.com contained the following:
>
>[color=green]
>>I had to ad $x=$x+1;
>>
>>but perhaps there is another way?[/color]
>
>
> $x++;
>[/color]

[Martijn]

Re: How can I change every second row?

>>> I had to add $x=$x+1;[color=blue][color=green][color=darkred]
>>>
>>> but perhaps there is another way?[/color]
>>
>>
>> $x++;[/color][/color]

Some other approaches:

$x = 0;
if ( ++$x % 2 )
{
...
}

would be even shorter, or:

$x = 0;
if ( $x = ~$x )
{
...
}

would also work.

--
Martijn

http://www.sereneconcepts.nl

[R. Rajesh Jeba Anbiah]

[FAQ] Outputting alternate values (Was Re: How can I change every second row?)

Q: How can I output alternate values from a set of values-list?
A:

1. Just loop through your values-list array:
<?php
$values_arr = array('A', 'B', 'C', 'D');
for($i=0; $i<10; ++$i)
{
$value = current($values _arr) and next($values_ar r) or
reset($values_a rr);
echo $value;
}
?>

2. If you want just to flip-flop between two integers, use XOR logic:
<?php
$flip_num = 1;
$flop_num = 5;
for($i=0, $n=$flip_num; $i<10; ++$i, $n ^= ($flip_num^$flo p_num))
echo $n;
?>

The idea may be incorporated to echo a HTML table with alternate row
colors, row styles (using CSS class), etc.

++++++
@todo Better wording. Grammar cleanup. Someone may help.

[Jerry Stuckle]

Re: [FAQ] Outputting alternate values (Was Re: How can I change everysecond row?)

R. Rajesh Jeba Anbiah wrote:[color=blue]
> Q: How can I output alternate values from a set of values-list?
> A:
>
>
> 2. If you want just to flip-flop between two integers, use XOR logic:
> <?php
> $flip_num = 1;
> $flop_num = 5;
> for($i=0, $n=$flip_num; $i<10; ++$i, $n ^= ($flip_num^$flo p_num))
> echo $n;
> ?>[/color]

Way more complicated than necessary. Much better:

<?php
$flip_num = 1;
$flop_num = 5;
for($i=0; $i<10; $i++)
echo $i % 2 ? $flip_num : $flop_num;
?>

KISS.
--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===

[R. Rajesh Jeba Anbiah]

Re: [FAQ] Outputting alternate values (Was Re: How can I change every second row?)

Jerry Stuckle wrote:[color=blue]
> R. Rajesh Jeba Anbiah wrote:[color=green]
> > Q: How can I output alternate values from a set of values-list?
> > A:
> >
> >
> > 2. If you want just to flip-flop between two integers, use XOR logic:
> > <?php
> > $flip_num = 1;
> > $flop_num = 5;
> > for($i=0, $n=$flip_num; $i<10; ++$i, $n ^= ($flip_num^$flo p_num))
> > echo $n;
> > ?>[/color]
>
> Way more complicated than necessary. Much better:
>
> <?php
> $flip_num = 1;
> $flop_num = 5;
> for($i=0; $i<10; $i++)
> echo $i % 2 ? $flip_num : $flop_num;
> ?>
>
> KISS.[/color]

Not really. Your logic requires an iterator variable $i; but none of
the above logic requires such. So, the above logics can easily be
incorporated while reading DB or using foreach or while loops.

--
<?php echo 'Just another PHP saint'; ?>
Email: rrjanbiah-at-Y!com Blog: http://rajeshanbiah.blogspot.com

[Jerry Stuckle]

Re: [FAQ] Outputting alternate values (Was Re: How can I change everysecond row?)

R. Rajesh Jeba Anbiah wrote:[color=blue]
> Jerry Stuckle wrote:
>[color=green]
>>R. Rajesh Jeba Anbiah wrote:
>>[color=darkred]
>>>Q: How can I output alternate values from a set of values-list?
>>>A:
>>>
>>>
>>> 2. If you want just to flip-flop between two integers, use XOR logic:
>>><?php
>>>$flip_num = 1;
>>>$flop_num = 5;
>>>for($i=0, $n=$flip_num; $i<10; ++$i, $n ^= ($flip_num^$flo p_num))
>>> echo $n;
>>>?>[/color]
>>
>>Way more complicated than necessary. Much better:
>>
>><?php
>> $flip_num = 1;
>> $flop_num = 5;
>> for($i=0; $i<10; $i++)
>> echo $i % 2 ? $flip_num : $flop_num;
>>?>
>>
>>KISS.[/color]
>
>
> Not really. Your logic requires an iterator variable $i; but none of
> the above logic requires such. So, the above logics can easily be
> incorporated while reading DB or using foreach or while loops.
>
> --
> <?php echo 'Just another PHP saint'; ?>
> Email: rrjanbiah-at-Y!com Blog: http://rajeshanbiah.blogspot.com
>[/color]

Rajesh,

Your code also requires and iterator variable $i; additionally it
requires a second variable $n and uses a double xor logic.

--
=============== ===
Remove the "x" from my email address
Jerry Stuckle
JDS Computer Training Corp.
jstucklex@attgl obal.net
=============== ===