service-shortcode.php

<?php

function seo_service_box_shortcode($atts, $content = null){

extract( shortcode_atts(array(
        'title' => '',
        'desc' => '',
        'type' => 1,
        'link_to_page' => '',
        'external_link' => '',
        'link_text' => 'See more',
        'icon_type' => 1,
        'upload_icon' => '',
        'choose_icon' => '',
        'box_background' => '',
    ), $atts) );
if($type == 1){
    $link_source = get_page_link($link_to_page);
}else{
    $link_source = $external_link;
}

    $box_background = wp_get_attachment_image_src($box_background, 'medium');


$seo_service_box_markup = '
<div class="seo-service-box">
 <div style="background-image:url('.$box_background[0].')" class="seo-service-icon">
  <div class="seo-service-table">
   <div class="seo-service-tablecell">';

  if($icon_type == 1){
    $service_icon_array = wp_get_attachment_image_src($upload_icon, 'thumbnail');
    $seo_service_box_markup .= '<img src="'.$service_icon_array[0].'" alt=""/>';
  }else{
    $seo_service_box_markup .= '<i class="'.$choose_icon.'"></i>';
  }

$seo_service_box_markup .= '

   </div>
  </div>
 </div>

 <div class="seo-service-content">
  <h3>'.$title.'</h3>
   '.wpautop($desc).'
   <a href="'.$link_source.'" class="service-more-btn">'.$link_text.' <i class="fa fa-angle-right"></i></a>
 </div>
</div>


';
$seo_service_box_markup .= '';

return $seo_service_box_markup;

}
add_shortcode('seo_service_box', 'seo_service_box_shortcode');