*/
function usp_is_public_submission($postId = false) {
global $post;
if (false === $postId) {
if ($post) $postId = $post->ID;
}
if (get_post_meta($postId, 'is_submission', true) == true) {
return true;
}
return false;
}
/*
Returns an array of URLs for the specified post image
Usage:
*/
function usp_get_post_images($postId = false) {
global $post;
if (false === $postId) {
if ($post) $postId = $post->ID;
}
if (usp_is_public_submission($postId)) {
return get_post_meta($postId, 'user_submit_image');
}
return array();
}
/*
Prints the URLs for all post attachments.
Usage:
Syntax:
Parameters:
$size = image size as thumbnail, medium, large or full -> default = full
$beforeUrl = text/markup displayed before the image URL -> default = 
$numberImages = the number of images to display for each post -> default = false (display all)
$postId = an optional post ID to use -> default = uses global post
*/
function usp_post_attachments($size = 'full', $beforeUrl = '
', $numberImages = false, $postId = false) {
global $post;
if (false === $postId) {
if ($post) $postId = $post->ID;
}
if (false === $numberImages || !is_numeric($numberImages)) {
$numberImages = 99;
}
$args = array(
'post_type' => 'attachment',
'post_parent' => $postId,
'post_status' => 'inherit',
'numberposts' => $numberImages
);
$attachments = get_posts($args);
foreach ($attachments as $attachment) {
$info = wp_get_attachment_image_src($attachment->ID, $size);
echo $beforeUrl . $info[0] . $afterUrl;
}
}
/*
For public-submitted posts, this tag displays the author's name as a link (if URL provided) or plain text (if URL not provided)
For normal posts, this tag displays the author's name as a link to their author's post page
Usage:
*/
function usp_author_link() {
global $post;
$isSubmission = get_post_meta($post->ID, 'is_submission', true);
$submissionAuthor = get_post_meta($post->ID, 'user_submit_name', true);
$submissionLink = get_post_meta($post->ID, 'user_submit_url', true);
if ($isSubmission && !empty($submissionAuthor)) {
if (empty($submissionLink)) {
echo '' . $submissionAuthor . '';
} else {
echo '' . $submissionAuthor . '';
}
} else {
the_author_posts_link();
}
}
/*
Function: usp_get_images()
Returns an array of image URLs, wrapped in optional HTML
Syntax:
Usage:
Parameters:
$size = image size as thumbnail, medium, large or full -> default = thumbnail
$format = whether to make the image a linked image -> default = image (can use image or image_link)
$target = whether to open linked image in new tab -> default = blank (can use blank or self)
$class = optional custom class name(s) -> default = none
$number = the number of images to display for each post -> default = 100
$post_id = an optional post ID to use -> default = false (uses global/current post)
*/
if (!function_exists('usp_get_images')) :
function usp_get_images($size = false, $format = false, $target = false, $class = false, $number = false, $post_id = false) {
global $post;
$post_id = ($post_id && is_numeric($post_id)) ? $post_id : $post->ID;
$number = (is_numeric($number)) ? intval($number) : intval(apply_filters('usp_image_attachments', 100));
$class = ($class) ? ' '. sanitize_html_class($class) : '';
$target = ($target === 'blank') ? ' target="_blank" rel="noopener noreferrer"' : '';
$format = ($format === 'image' || $format === 'image_link') ? $format : 'image';
$size = ($size === 'thumbnail' || $size === 'medium' || $size === 'large' || $size === 'full') ? $size : 'thumbnail';
$args = array(
'post_status' => 'publish',
'post_type' => 'attachment',
'post_parent' => $post_id,
'post_status' => 'inherit',
'posts_per_page' => $number,
'fields' => 'ids'
);
$args = apply_filters('usp_image_attachments_args', $args);
$image_ids = get_posts($args);
$urls = array();
$i = 1;
foreach ($image_ids as $id) {
$url = wp_get_attachment_image_src($id, $size);
$original = wp_get_attachment_image_src($id, 'full');
if ($url && $original) {
if ($format === 'image' && isset($url[0])) {
$urls[] = ' .')
';
} elseif ($format === 'image_link' && isset($url[0]) && isset($original[0])) {
$linked_image = '';
$linked_image .= '';
$urls[] = $linked_image;
}
if ($i == intval($number)) break;
$i++;
}
}
return $urls;
}
endif;