Search results group by 10 in each page - php

Question

I have stacked on finding a way to code a php search script which will group results e.g of 10 per page.
e.g page
______________________________
| ________ |
| search: |________| submit |
| |
| |
| ________________________ |
| | <-|---|------------<div id=results></div>
| |________________________| | |
|______________________________| |
v
div which shows the results grouped
by 10
For example: Suppose that I search images by tag, and for the tag 'love' there are 20 images. How could I show the first 10 results on one page and the last 10 results on another page. (the first page has a link to the second page and visa versa).

Answer 1

A hint is that the modulo operator is really handy for pagination. It checks the remainder of a division operation, which corresponds to zero for new pages when using it for pagination.
Here's a quick and dirty example of pagination:
<?php
$arr = array();
for ( $x = 0; $x < 100; $x += 1 ) {
$arr[] = $x;
};
$page = 7;
$per_page = 7;
$current_page = 1;
for ( $z = 0; $z < count( $arr ); $z += 1 ) {
if ( 0 === ( $z % $per_page ) ) {
$current_page += 1;
}
if ( $current_page === $page ) {
echo "value $z on page $page\n";
}
}
?>
~$ php pagination.php
value 35 on page 7
value 36 on page 7
value 37 on page 7
value 38 on page 7
value 39 on page 7
value 40 on page 7
value 41 on page 7