Shortcode to fetch permalink by slug for page, category, post

Fetch Permalink Shortcode

<?php
/**
 * Shortcode to fetch permalink by slug for page, category, post
 *
 * [permalink type='cat' slug='hoge']
 * 
 * @param type  :page(default), cat, post
 * @param slug  :only child page needs parent slug. eg.slug='parent/child'
 *
 * @return url string
 */

function fetch_permalink( $atts ) {
    extract( shortcode_atts( array(
        'type'     => 'page',
        'slug'     => '',
    ), $atts ) );
    if ( $type == 'page' ){
      $link = get_permalink( get_page_by_path( $slug ) );
    } elseif ( $type == 'cat' ){
      $catObj = get_category_by_slug( $slug );
      $link = get_category_link( $catObj->term_id );
    } elseif ( $type == 'post' ){
      $link = get_permalink( get_page_by_path( $slug, OBJECT, 'post' ) );
    }

return $link ;
}
add_shortcode('permalink', 'fetch_permalink');
?>