If you need to find odd numbers in an array in php it’s very easy. You just use the “%” command. eg.

if ($num % 2) {
echo “$num is odd”;
} else {
echo “$num is even”;
}

I think what it basically does is divides the number by 2 and if it’s not a whole number it renders it returns it as odd.

Here’s how this code can be very tidy and useful:

The following code can be helpful if you are doing a php foreach repeater to produce a table and you want to use an alternating css class on every second row.

Step 1:
Place a $count outside your foreach loop.

$count=”0″;

Step 2:
Create your rows with the alternating css classes

echo “<tr class =’”;
$count++;
if ($count % 2) {
echo “rowclass1″; }
else {
echo “rowclass2″;
}
echo “‘>”;
echo “<td>Your row Content</td></tr>”;

That’s it, each row will have a different css class and it saves you having to do each row manually!

Tags: css class table row foreach loop odd even numbers

This entry was posted on Tuesday, April 28th, 2009 at 7:02 pm and is filed under css, php. You can follow any responses to this entry through the feed. You can leave a response, or trackback from your own site.