Get featured image URL by page id

I am using WordPress 3.4.1. I need to display the featured image of a page. How can I get the featured image URL by particular page ID. Any help?

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2 comments

  1. Did you try anything? Its always helpful to share what you have tried.

    $url = wp_get_attachment_url( get_post_thumbnail_id($post_id) );
    

    Or if you want to get the image by image size.

    $src = wp_get_attachment_image_src( get_post_thumbnail_id($post_id), 'thumbnail_size' );
    $url = $src[0];
    

    http://codex.wordpress.org/Function_Reference/get_post_thumbnail_id

    http://codex.wordpress.org/Function_Reference/wp_get_attachment_url

    http://codex.wordpress.org/Function_Reference/wp_get_attachment_image_src