item guids

include/items.php

@@ -747,6 +747,8 @@ function item_store($arr,$force_parent = false) {
 		}
 	}
 
+	$arr['guid'] = get_guid();
+
 	call_hooks('post_remote',$arr);
 
 	dbesc_array($arr);

include/text.php

@@ -881,7 +881,7 @@ function return_bytes ($size_str) {
 function generate_user_guid() {
 	$found = true;
 	do {
-		$guid = substr(random_string(),0,16);
+		$guid = random_string(16);
 		$x = q("SELECT `uid` FROM `user` WHERE `guid` = '%s' LIMIT 1",
 			dbesc($guid)
 		);