Unable to the get the gallery inserted between shortcodes

I don’t know why the code is not working.
But this is how i did this may be helpful for some noob like me

<?php                  
    $name = get_the_content();          
    preg_match('/\]*)\"]/', $name, $match);                  
    $w3_ids = explode( ",", $match[1] ); 
    $gallery_count=1;
    foreach( $w3_ids AS $w3_id ): 
       $src = wp_get_attachment_image_src($w3_id,'full'); 
?>  
    <div class="item <?php if($gallery_count==1)echo "active"; ?>">
        <img src="https://wordpress.stackexchange.com/questions/193166/<?php echo $src[0]; ?>" alt="" />
    </div>
<?php 
    $gallery_count++;
    endforeach;        
?>