PHP Pagination - Limit amount of links - php

Question

So i have my pagination links like this.
for ( $counter = 0; $counter <= $page_amount; $counter += 1) {
echo "<a href=\"section.php?q=$section&p=$counter\">";
echo $counter+1;
echo "</a>";
}
And the links grows like:
1 2 3 4 5 6 7 and so on.
But i want to limit this so if there is more than 7 pages it shall only show 7 links like this:
1 2 3 ... 10 11 12
where 12 is the last page.
And if you go to next page it will only change the first pages like this:
3 4 5 ... 10 11 12
until you reach the last 7 pages like this:
6 7 8 9 10 11 12
How do i do this ??
please help.

Answer 1

Here is one way to do it.
// Set some presets
$current_page = 0;
$page_amount = 11;
$limiter = 7;
// Set upper and lower number of links
$sides = round(($limiter/2), 0, PHP_ROUND_HALF_DOWN);
for ( $counter = 0; $counter <= $page_amount; $counter++) {
// Start with Current Page
if($counter >= ($current_page)){
// Show page links of upper and lower
if(($counter <($current_page+$sides))||($counter >($page_amount-$sides))){
echo "<a href=\"section.php?q=$section&p=$counter\">";
echo $counter+1;
echo "</a> ";
}
// The middle link
elseif($counter ==($current_page+$sides)){
echo "<a href=\"page.php?p=$counter\">";
// Show number if number of links == $limiter
if(($page_amount-$current_page)==$limiter-1){
echo $counter+1;
}
// Show '...' number of links > $limiter
else {
echo "...";
}
echo "</a> ";
}
}
}
This allows to change the number of links shown, ie. from 7 to 9.
Note, using PHP_ROUND_HALF_DOWN in round() requires php>=5.3