Getting the attachment URL instead of the ID (Wordpress) - wordpress

Question

I have a script that allows me to upload an image to wordpress from the front end. I then need it to post the file to the post_meta. Right now it's working fine, BUT I end up with the Attachment ID and need the LINK to the file.
Here's the code that is handling this particular function.
if ($_FILES) {
foreach ($_FILES as $k => $v) {
if ($k != 'poster_has_paid' && $k != 'featured_image') {
if ($_FILES[$k]) {
wpo_poster_insert_attachment($k, $post_id, false, $k);
}
}
}
}
And here is the function wpo_poster_insert_attachment
function wpo_poster_insert_attachment($file_handler, $post_id, $setthumb = 'false', $post_meta = '') {
// check to make sure its a successful upload
if ($_FILES[$file_handler]['error'] !== UPLOAD_ERR_OK) {
__return_false();
}
require_once(ABSPATH . "wp-admin" . '/includes/image.php');
require_once(ABSPATH . "wp-admin" . '/includes/file.php');
require_once(ABSPATH . "wp-admin" . '/includes/media.php');
$attach_id = media_handle_upload($file_handler, $post_id);
if ($setthumb) {
update_post_meta($post_id, '_thumbnail_id', $attach_id);
}
if (!$setthumb && $post_meta != '') {
update_post_meta($post_id, $post_meta, $attach_id);
}
return $attach_id;
Again, it's updating the field with the attach_id, and I'd like it to update the attach_url
PS I will give thanks when I have enough posts to do so. Thanks in advance.

Answer 1

Something like this should work
function wpo_poster_insert_attachment($file_handler,$post_id,$setthumb='false', $post_meta = '') {
// check to make sure its a successful upload
if ($_FILES[$file_handler]['error'] !== UPLOAD_ERR_OK) __return_false();
require_once(ABSPATH . "wp-admin" . '/includes/image.php');
require_once(ABSPATH . "wp-admin" . '/includes/file.php');
require_once(ABSPATH . "wp-admin" . '/includes/media.php');
$attach_id = media_handle_upload( $file_handler, $post_id );
if ($setthumb) {
update_post_meta($post_id,'_thumbnail_id',$attach_id);
// Get the attachment/thumbnail source, and add it to the post meta as well.
$src = wp_get_attachment_image_src($thumbnail_id, 'full');
update_post_meta($post_id,'_thumbnail_src', #$src[0]);
}
if(!$setthumb && $post_meta!=''){
update_post_meta($post_id, $post_meta, $attach_id);
}
return $attach_id;
}
But normally, since you already have the thumbnail_id stored in the post meta, you might want to pull the attachment source at run-time:
if($thumbnail_id = get_post_meta($post->ID, '_thumbnail_id', true)) {
$attachment_size = 'full';
$src = wp_get_attachment_image_src($thumbnail_id, $attachment_size);
if(!$src) {
$src = array('http://mysite.com/path/to/default-image.png', 640, 480);
}
echo '<img src="'.esc_url($src[0]).'" alt="" />';
}