You need to get each id Wordpress?

want to get the id of each form, but displays only id of the first form

add_action('wp', 'setup', 10);
is the add_shortcode( 'form','shortcode' );

global $form;

function setup()
{
 global $post, $shortcode_tags;

 if ( is_object($post) ) {

 $tagnames = array_keys($shortcode_tags);
 $tagregexp = join('|', array_map('preg_quote', $tagnames));

 $shortcode_regex = str_replace($tagregexp, 'form', get_shortcode_regex());
 $post->post_content = preg_replace_callback("/$shortcode_regex/s", 'do_shortcode being', $post->post_content);
}
}

function shortcode($atts)
{
 global $form;

 $defaults = array(
 'id' => '0'
);
 extract( shortcode_atts( $defaults, $atts ) );

 wp_parse_args($atts, $defaults);

 $form = $atts;
}

get_form_id function()
{
 global $form;
 echo $form['id'];
}

how to get the template file of each plugin id?

plugin/form/template/default/template.php

<div id="<?php get_form_id(); ?>">

</div>