Showposts 30 but 10 per page - php

Question

I have now this piece of code to show on each page 10 posts but know I want still the same but the maximum of posts in total can only be 30.
How do I do this?
<?php query_posts('showposts=10&paged='.$paged);?>

Answer 1

This is code where you want to display the post:
<?php $paged = (get_query_var('paged')) ? get_query_var('paged') : 1;
$args = array( 'post_type' => 'post', 'posts_per_page' => 10,'paged' => $paged);
$loop = new WP_Query( $args );
while ( $loop->have_posts() ) : $loop->the_post();
print_r($post); ?>
<h1> <?php the_post_thumbnail(); ?></h1>
<h2><?php the_title(); ?></h2>
<h3><?php the_content(); ?></h3>
<?php endwhile; ?>
This is footer where you need to display pagination.
<?php $paged = (get_query_var('paged')) ? get_query_var('paged') : 1; ?>
<?php if($loop->max_num_pages>1){?>
<ul class="pager">
<?php for($i=1;$i<=$loop->max_num_pages; $i++){ ?>
<li> <?php echo $i; ?></li>
<?php } ?>
</ul>

Answer 2

You should use wp_query to retrieve the posts, like Pieter Goosen said, is more efficient. Also wp_query have a property called $max_num_page that you can use to limit the number of pages you get.
You can modify your pagination to something like this:
global $wp_query;
if ( $wp_query->max_num_pages > 1 ){
$current_page = max( 1, get_query_var('paged') );
$max_pages = 3;
$args = array(
'base' => #add_query_arg('paged','%#%'),
'format' => '/paged/%#%',
'current' => $current_page,
'total' => $max_pages,
'show_all' => false,
'type' => 'array',
'paged' => 1
);
$pages = paginate_links( $args );
if (is_array($pages)) {
$paged = ( get_query_var('paged') == 0) ? 1 : get_query_var('paged');
foreach( $pages as $page) {
echo "$page";
}
}
}
I have also found this question. This code seems to work and you don't need to change any of your current code:
add_filter('pre_get_posts', 'limit_pages');
function limit_pages($query) {
$query->max_num_pages = 3;
if ($query->query_vars['paged'] > 3) {
$query->query_vars['paged'] = 3;
$query->query['paged'] = 3;
}
return $query;
}