Show first uploaded image inside post loop?

i’ve tried with this but doesn’t work

<?php if ( get_post_meta( get_the_ID(), ‘wpsimplegallery_gallery’, true ) ) : ?>
” rel=”bookmark”>
<img class=”thumb” src=”<?php echo get_post_meta( get_the_ID(), ‘wpsimplegallery_gallery’, true ); ?>” alt=”<?php the_title(); ?>” />

<?php endif; ?>

It returns array even if “true” specified ??

finally i’ve done it ??

<?php

$post_id = $post->ID;
$gallery = get_post_meta($post_id, ‘wpsimplegallery_gallery’, true);

$image = wp_get_attachment_image_src($gallery[0]);
echo “<img src=\””.$image[0].”\”>”;

?>