Wordpress Bootstrap Slider

gistfile1.txt

<?php
    // Add in functions
    // add_theme_support( 'post-thumbnails' );
    // add_theme_support( 'title-tag' );
    
    // To create slides, add a featured image on post and
    // add a tag named slide
    
    // To create a slide.php and save this gist, into theme
    // subfolder named parts
    
    // To call the slider use: get_template_part('parts/slider.php');

    $slides = array();
    $args = array( 'tag' => 'slide', 'nopaging'=>true, 'posts_per_page'=>5 );
    $slider_query = new WP_Query( $args );
    if ( $slider_query->have_posts() ) {
        while ( $slider_query->have_posts() ) {
            $slider_query->the_post();
            if(has_post_thumbnail()){
                $temp = array();
                $thumb_id = get_post_thumbnail_id();
                $thumb_url_array = wp_get_attachment_image_src($thumb_id, 'imbxblog-full', true);
                $thumb_url = $thumb_url_array[0];
                $temp['title'] = get_the_title();
                $temp['excerpt'] = get_the_excerpt();
                $temp['image'] = $thumb_url;
                $slides[] = $temp;
            }
        }
    }
    wp_reset_postdata();
?>
<?php if(count($slides) > 0) { ?>
    <div id="carousel-header" class="carousel slide" data-ride="carousel">
        <ol class="carousel-indicators">
            <?php for($i=0;$i<count($slides);$i++) { ?>
                <li data-target="#carousel-header" data-slide-to="<?php echo $i ?>" <?php if($i==0) { ?>class="active"<?php } ?>></li>
            <?php } ?>
        </ol>
        <div class="carousel-inner" role="listbox">
            <?php $i=0; foreach($slides as $slide) { extract($slide); ?>
            <div class="item <?php if($i == 0) { echo 'active'; } ?>">
                <div class="carousel-caption"><h3><?php echo $title; ?></h3><p><?php echo $excerpt; ?></p></div>
                <!--<div class="item-blur"></div>-->
                <div class="item-image" style="background-image: url(<?php echo $image ?>);">
            </div>
            <?php $i++; } ?>
        </div>
        <a class="left carousel-control" target="_blank" href="#carousel-header" role="button" data-slide="prev"><span class="glyphicon glyphicon-chevron-left" aria-hidden="true"></span><span class="sr-only">Previous</span></a>
        <a class="right carousel-control" target="_blank" href="#carousel-header" role="button" data-slide="next"><span class="glyphicon glyphicon-chevron-right" aria-hidden="true"></span><span class="sr-only">Next</span></a>
    </div>
<?php }