sideload images from gf multi-upload

sideload-gf-images.php

<?php

add_filter( 'gform_save_field_value', 'save_field_value', 10, 4 );
function save_field_value( $value, $lead, $field, $form ) {
	$output_ids = array();
	global $files_to_sideload;
	if(!isset($files_to_sideload) || empty($files_to_sideload)){
		$files_to_sideload = array();
	}
	//if not the form with fields to encode, just return the unaltered value without checking the fields
	if ( absint( $form['id'] ) <> 1 ) {
		return $value;
	}
	//array of field ids to encode
	$encode_fields = array( 1 );
	//see if the current field id is in the array of fields to encode; encode if so, otherwise return unaltered value
	if ( in_array( $field->id, $encode_fields ) ) {
		$urls = json_decode($value);
		foreach ($urls as $url) {
			$tmp = download_url($url);
			if (is_wp_error($tmp)) {
				// download failed, handle error
			}
			$file_array = array();
			// Set variables for storage
			// fix file filename for query strings
			preg_match('/[^\?]+\.(jpg|jpe|jpeg|gif|png)/i', $url, $matches);
			$file_array['name'] = basename($matches[0]);
			$file_array['tmp_name'] = $tmp;
			// If error storing temporarily, unlink
			if (is_wp_error($tmp)) {
				@unlink($file_array['tmp_name']);
				$file_array['tmp_name'] = '';
			}
			// do the validation and storage stuff
			$files_to_sideload[] = $file_array;
		}
		return $value;
	} else {
		if (isset($field->id) && $field->id == 3){
			$post_id = array(38,183);
			$desc = "";
			$i = 0;
			$image_meta_array = json_decode($value);
			foreach ($files_to_sideload as $file){
				$file_name = $image_meta_array[$i]->id;
				if (strpos($file['name'],$file_name) !== false){
					$new_title = $image_meta_array[$i]->title;
					$desc = $image_meta_array[$i]->desc;
				}
				if (empty($new_title)){
					$new_title = $file_name;
				}
				$post_data = array(
					'post_content' => $desc
				);
				$id = media_handle_sideload($file, $post_id, $new_title, $post_data);
				// If error storing permanently, unlink
				if (is_wp_error($id)) {
					@unlink($file['tmp_name']);
					return $id;
				}
				$output_ids[] = $id;
				$src = wp_get_attachment_url($id);
				$i++;
			}
			foreach ($post_id as $single_post) {
				$new_content = get_post_field('post_content', $single_post);
				$pattern = get_shortcode_regex();
				if (   preg_match_all( '/'. $pattern .'/s', $new_content, $matches )
				       && array_key_exists( 2, $matches )
				       && in_array( 'gallery', $matches[2] ) )
				{
					$short_code = $matches[0];
					$re1='((?:[a-z][a-z0-9_]*))';	# Variable Name 1
					$re2='(=)';	# Any Single Character 1
					$re3='(".*?")';	# Double Quote String 1
					/*
					 * for some reason short_code_ids doesn't seem to want to grab the last attribute,
					 * so I am going to build my own array of shortcode attributes so I can update the ids
					 * before loading.
					 */
					preg_match_all ("/".$re1.$re2.$re3."/is", $short_code[0], $short_code_atts);
					$short_code_atts_aray = array();
					for($i = 0; $i < count($short_code_atts[0]); $i++){
						$short_code_atts_aray[$short_code_atts[1][$i]] = $short_code_atts[3][$i];
					}
					//$short_code_atts = shortcode_parse_atts($short_code[0]);
					$short_code_atts_aray['ids'] = str_replace('"', '', $short_code_atts_aray['ids']);
					$id_array = explode(",",$short_code_atts_aray['ids']);
					foreach($output_ids as $an_id){
						$id_array[] = $an_id;
					}
					$new_id_str = implode(",",$id_array);
					//$short_code_atts['ids'] = $new_id_str;
					$new_shortcode = str_replace($short_code_atts_aray['ids'], $new_id_str, $short_code);
					$new_content = str_replace($short_code,$new_shortcode,$new_content);
				}
				$curr_post = array(
					'ID' => $single_post,
					'post_content' => $new_content
				);
				wp_update_post($curr_post);
			}
		}
		return $value;
	}
}