Pagination of current category - php

Question

I'm trying to paginate a current category. But when I go to the next page, wordpress not show only all post of the current category, wordpress show all post of all categories. Somebody can help me?
Category.php
<!-- loop -->
<?php $cat_ID = get_query_var('cat'); ?>
<?php query_posts('&cat=<' . $cat_ID . '&showposts=6'); ?>
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
<div class="col-sm-12 col-md-6 col-xs-12 col-lg-4">
<div class="thumbnail">
<article>
<?php the_post_thumbnail('photo-thumbnail') ?>
<div class="caption">
<h3><?php the_title(); ?></h3>
<!-- añade custom field autor del relato -->
</div>
</article>
</div>
<div class="thumbnailFooter">
<div class="pull-left" style="margin-bottom: 4px;">
<?php echo get_avatar(get_the_author_meta('ID'), 32); ?>
</div>
<div class="smallFont pull-left" style="margin-left: 5px; width: 270px;">
<span class="blue bold"><?php the_author(); ?></span>
</div>
<div class="verySmallFont pull-left" style="margin-left: 5px; margin-top: -3px;">
en <?php the_category(none); ?> el <?php the_date(); ?>
</div>
</div>
</div>
<?php endwhile; ?>
<?php my_pagination(); ?>
<?php else : ?>
<?php endif; ?>
<!-- / fin del loop -->
Function.php
<?php
if (!function_exists('my_pagination')) :
function my_pagination() {
global $wp_query;
$big = 999999999; // need an unlikely integer
echo paginate_links(
array(
'base' => str_replace($big, '%#%', esc_url(get_pagenum_link($big))),
'format' => '?paged=%#%',
'current' => max(1, get_query_var('paged')),
'total' => $wp_query->max_num_pages,
'prev_text' => __('« Anterior'),
'next_text' => __('Siguiente »'),
)
);
}
endif;
EDIT::::::::::
After do suggested changes (but don't works). Wordpress not limit 5 post per page and the paginator not appear.
<!-- loop de post -->
<?php
$project_category = wp_get_post_categories($post->ID); ?>
<?php $query = new WP_Query(array('posts_per_page' => 5)); ?>
<?php if (have_posts()) : while (have_posts()) : the_post(); ?>
<div class="col-sm-12 col-md-6 col-xs-12 col-lg-4">
<div class="thumbnail">
<article>
<?php the_post_thumbnail('photo-thumbnail') ?>
<div class="caption">
<a href="<?php the_permalink(); ?>">
<h3 style="font-weight:bold; margin-top: 0px; line-height: 1.3;"><?php the_title(); ?></h3>
</a>
<!-- añade custom field autor del relato -->
</div>
</article>
</div>
<div class="thumbnailFooter">
<div class="pull-left" style="margin-bottom: 4px;">
<?php echo get_avatar(get_the_author_meta('ID'), 32); ?>
</div>
<div class="smallFont pull-left" style="margin-left: 5px; width: 270px;">
<span class="blue bold"><?php the_author(); ?></span>
</div>
<div class="verySmallFont pull-left" style="margin-left: 5px; margin-top: -3px;">
en <span class="bold gray"><?php the_category(none); ?></span>
el <?php the_date(); ?>
</div>
</div>
</div>
<?php endwhile; ?>
<div style="text-align: right; padding-right: 12px;">
<?php my_pagination(); ?>
</div>
<?php else : ?>
<?php endif; ?>
<!-- / fin del loop -->

Answer 1

You seem to have a left angle bracket < inside your query_posts function. Try removing that.